Case Study: Avoiding a 26-Week Delay with Stocked DFARS Screws
Posted: December 16, 2025 Filed under: DFARS, Domestic Fasteners, keensert, key-locking inserts, Mil-Spec Fasteners, Socket Head Cap Screw, Socket Products | Tags: Case Study, Certificate of conformance, COC, DFARS Compliant, Domestic Fasteners, manufacturing, Mil-spec, Mil-spec fasteners, Mil-Spec Fasteners Cross-Reference, Mil-Spec Fasteners Distributor, Mil-Spec Fasteners Supplier, Mil-Spec Socket Cap Screws, MTRs, Precision Engineering, Precision Manufacturers, Socket Head Cap Screw Leave a comment
A Buyer’s Case Study on Compliance + Speed
If you sell into the defense or aerospace industry, “finding a screw” is never just finding a screw. The part has to be dimensionally and chemically correct and compliant, with the documentation to prove it.
This is where many procurement teams get stuck: the hardware exists, but the paper trail doesn’t… or the lead time blows up the schedule.
The MF Supply Value Proposition
If you have a commercial part on a BOM that now needs DFARS / Buy American + documentation, MF Supply helps you do one of two things:
- Convert the requirement into the correct Mil-Spec / spec-controlled equivalent (form/fit/function + compliance + paperwork).
- Source or produce a DFARS-compliant version of a commercial catalog part with shorter lead times and with the right cert package.
You get the part you need, on time, with the compliance paperwork you need without playing supplier roulette.
What DFARS/Buy American Actually Means for Fasteners
For fasteners made from specialty metals (including many stainless and high-alloy steels), DFARS requires qualifying melt/manufacture origin. But the “gotcha” is simple: If you can’t document it, it doesn’t count.
Typical documentation packages include:
- Manufacturer Certificate of Conformance (COC)
- Country-of-origin / DFARs specialty metal compliance statements
- Material Test Reports (MTRs)
Visit the DPC website, section 252.225, to keep up to date with DFARs requirements, which were updated January 2023. Click here and scroll to 7009 for more information: 252.225-7000 Buy American Act – Balance of Payments Program Certificate.
The Challenge: Compliant Part, Short Lead Time, Complete Documentation
Many “available” fasteners on the market are:
- Not DFARS compliant
- Not available with COC/MTR
- Not stocked (or stocked without the right chain-of-custody), leading to long lead times
The Situation: “We Need It Now… and It Needs To Pass Audit.”
A manufacturer supporting a defense aerospace assembly needed a 10-32 x 3/4 socket head cap screw in 300-series stainless. The Bill of Materials (BOM) required:
- DFARS-compliant specialty metal
- Manufacturer COC
- MTRs / test reports
- Documented material origin
Their incumbent supplier quoted 26–30 weeks. That was a hard no.
The Solution: Cross-Reference to an In-Stock Mil-Spec Option (With Paperwork)
The buyer searched for DFARS-compliant 10-32 x 3/4 socket head cap screws in stainless steel and landed on MF Supply’s product page for: NAS1351C3-12 (10-32 x 3/4) Mil-Spec socket head cap screw, stainless, DFARS
MF Supply worked with the buyer to:
- Confirm the correct spec-controlled requirement
- Pull active inventory from a qualified supply chain
- Provide COC + MTR documentation
- Confirm DFARS specialty metal origin with documentation
The result
- 26+ week production delay avoided
- Compliance risk eliminated
- Audit-ready paperwork shipped with the order
When Cross-Referencing Helps (And When It Doesn’t)
Cross-referencing can reduce lead times and risk when it’s validated upfront:
- Form/fit/function confirmed
- Spec requirements verified (AN/MS/NAS/NASM, etc.)
- Documentation requirements confirmed (COC, MTR, COO/DFARS statements)
Substitution only works when the part and the paperwork both match the requirement.
Buyer Takeaway: In-Stock + Paperwork=Shorter Lead Times, No Surprises
If your customer needs DFARS / Buy American compliance, always ask:
- Can you provide a COC?
- Can you provide DFARS specialty metal documentation?
- Is material origin documented?
- Is it in stock, or are you quoting a 20–30 week lead time?
At MF Supply, inventory is backed by documentation, so you don’t have to choose between speed and compliance.
Need DFARS-compliant screws fast and with paperwork?
Send your part number, drawing, or BOM requirements. We’ll confirm the right spec, validate compliance, and quote the fastest safe path.
And yes, “finding the right screw for you” isn’t just our tagline. It’s our favorite sport.
Related:
- MF Supply Cross-reference playbook
- Buyer’s Guide to Mil-Spec Fasteners
- Mil-Spec DFARS!? What the heck is that?
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Your Purchasing Department’s Secret Weapon!
Here are 5 reasons to buy from MF Supply
- We Source and Deliver What Others Can’t, Faster Than You Imagined – With speedy solutions for elusive parts and lengthy delivery times – We’ve got you covered with both custom-made specials (send us your prints!) and hard-to-source options, quickly and at a fair price.
- Cost-Effective Functional Equivalents to OEM Brand Fasteners-Why Pay More? – Reduce lead times and costs with the same quality and same performance. Try us for alternatives to brands like McMaster-Carr, MSC, Misumi, PEM, and RAF and experience unmatched savings! Same form, fit and function for less.
- Huge Selection of Certified and Commercial Hardware with Same-day Shipping Available for Countless Items – We source and stock standards, specials, commercial, Mil-Spec & OEM brands in inch and metric sizes. Standards include AN, NAS, MS, IFI, ASTM, ASME, DIN, ISO, JIS. We are sourcing experts for inserts, certified Mil-Spec parts and anything in stainless steel. Many parts are available with manufacturers’ certifications, including DFAR, ROHS and CoC. Trust us to ship on-time from our national distribution centers.
- A User-Friendly, 24/7 Online Shopping Experience – Enjoy a 24/7 online shopping experience with easy-to-use filters, detailed product information, and a constantly updated technical directory. Sign up now for a seamless experience!
- WBE/WOSB Certified Woman-Owned Small Business – As a certified Woman-Owned Small Business, we support your diversity goals. Trust us to meet your fastener and sourcing needs with expertise and efficiency [Cage Code 58QG4].
MF Supply is a WBE/WOSB certified supply chain partner to business, industry and government. We are sourcing experts and stocking distributors of Hardware, Precision & Mil-Spec Fasteners and Safety supplies. For more than 50 years, we have been supplying manufacturers in the electronics, industrial, commercial, aerospace and military markets with the full range of fastener products and services. Our Cage Code is 58QG4 and our registered name is RL Supply Inc dba MF Supply.
How to Use MF Supply’s Cross-Reference Tables to Find Equivalent Fasteners Faster
Posted: November 18, 2025 Filed under: Branded Fasteners, Commercial Fasteners, Cross Reference Charts, dowel pin, E-Z LOK, Functional Equivalents, helical wire inserts, keensert, key-locking inserts, Metric Fasteners, Mil-Spec, Mil-Spec Electronic Hardware, Mil-Spec Fasteners, Precision Shoulder Screws, Threaded Inserts | Tags: Hardware, Helical Inserts Cross Reference, Keenserts, Keenserts Cross Reference, manufacturing, Metric Fasteners Cross-Reference, Mil-Spec Fasteners Cross-Reference, MS51830, ms51831, MS51832, Precision Engineering, Precision Manufacturers, Precision Shoulder Screws Cross Reference, threaded inserts Leave a comment
Many popular fastener brands, from Keensert® key-locking inserts to precision shoulder screws, have alternative form-fit-function equivalents available in Mil-Spec, commercial or generic versions. The fastest way to identify the right alternative without guessing is by using cross-reference tables.
At MF Supply, we’ve built and curated multiple product-specific cross-reference tables so buyers can confidently match OEM brands, Mil-Spec part numbers, and generic equivalents, saving time, money, and lead time risk, while maintaining quality and compliance.
Below is your quick-start playbook.
What Product Categories Have Cross-Reference Tables?
We currently publish, maintain, or reference cross-reference data for high-demand categories. On our website, the Inch, Mil-Spec & Metric Fasteners Cross-Reference Charts category serves as your central hub. Once there, you can drill down into specific product families:
- Helical Inserts
- Hex Head Cap Screws
- Keensert® style threaded inserts
- Knurled Thumb Screws
- Precision Dowel Pins
- Precision Shoulder Screws
- Retaining Rings
- Self-Clinching Fasteners (nuts, studs & standoffs)
- Spacers (round & hex)
- Standoffs (round & hex)
- Threaded Inserts for Metal (E-Z LOK equivalents)
Each product family/category links to cross-reference charts that map:
- OEM brand part numbers/products
- Mil-Spec (MS, NAS, MA, NA) series (if applicable)
- Generic functional equivalents
- Sizes, materials and other specifications
Popular product categories include adhesives and sealants, anchors, bits and nutsetters, cage nuts, flex type lock nuts, handles, Keenserts®, knurled thumb screws, nylon insert stop nuts, precision shoulder screws, retaining rings, rivets & blind threaded inserts, self-clinching, fasteners, spacers and standoffs, speed clips, spring nuts, weld nuts, weld studs, and woodworking screws.
Brands Commonly Included in Cross-Reference Comparisons
3 STAR RIVETS USA, ABBATRON®, ALCOA, AMATOM®, APEX®, ARCONIC®, ATLAS®, AVDEL®, AVK®, B. F. GOODRICH, BOLLHOFF, BUCKEYE, CAPTIVE, CELUS®, CHERRY®, CONCORD, EZ-Lok, FASTENAL, GESIPA®, GRIPCO®, GLOBE ELECTRONICS, GRAINGER, H. H. SMITH, HOWMET, HUCK, INDUX, INTERFAST, KEENSERT®, KEYSTONE, LOCTITE®, LYN-TRON, MACLEANESNA®, MARSON®, MCMASTER-CARR, MISUMI, MSC INDUSTRIAL, PEM®, PIC DESIGN®, POP®, POWERS®, QUICKSCREWS, RAF, RED HEAD®, ROTOR CLIP®, SHEREX, SIMPSON, SOUTHCO®, SPS TECHNOLOGIES, TINNERMAN®, UNICORP, U. S. ANCHOR. VIP, W. M. BERG, W. W. GRAINGER, WALDES TRUARC® and many more.
How to Use Our Cross-Reference Tables (5-Step Method)
When you’re chasing cost savings, cutting lead time, or finding a compliant alternative, our cross-reference charts make it fast and fail-proof. Here’s the playbook:
- Visit our Cross-Reference Hub
Head to the Inch, Mil-Spec & Metric Fastener Cross-Reference Charts on mfsupply.com. - Select Your Product Category
Pick the family you’re working with (Keenserts®, shoulder screws, dowel pins, etc.). - Locate Your Identifier
Find the OEM brand part number or Mil-Spec/NAS/MA/NA code inside the chart. - Match the Technical Requirements
Click through to the referenced item and verify the functional equivalency: material, plating/finish, thread/diameter, length, fit/series, and any spec callouts. - Order or Request a Quote With Requirements
Purchase online or submit an RFQ — and let us know if you need COC, MTR, DFARS, REACH/RoHS, Country of Origin, or other compliance docs.
When to Cross vs. When to Stay On Brand
Fastener buyers often ask: How can I determine if I must use the brand name or if I can cross to a generic part?
Use this handy 4 point checklist as your guide:
- Does your bill of materials specifically call for the OEM brand-name fastener or component?
- Can you live with the lead time or will having parts sooner improve delivery of the final product?
- Will your supplier provide a certificate of conformance?
- Will saving money help you be more competitive?
Do not cross when:
- The BOM mandates the OEM brand, and the end customer may not be flexible
- Traceability or contract terms prohibit substitution
Case Studies Proving It Works
| Product Type | Result | Savings | Lead-Time Impact |
| Precision Shoulder Screw | Crossed to 8 valid equivalents | Major cost reduction | Immediate availability |
| Keensert® Key-Locking Insert | Crossed to Mil-Spec equivalent | 59% saving | 28 weeks → 5 weeks |
Need Help? We’ll Build the Cross For You
If you’re unsure, send us the part number, drawing, photo, or BOM section. We’ll match it, validate compliance, and offer your best-value, best-availability option.
Email RFQs to: sales@mfsupply.com
“Finding the right screw for you” is our tagline after all!
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Your Purchasing Department’s Secret Weapon!
Here are 5 reasons to buy from MF Supply
- We Source and Deliver What Others Can’t, Faster Than You Imagined – With speedy solutions for elusive parts and lengthy delivery times – We’ve got you covered with both custom-made specials (send us your prints!) and hard-to-source options, quickly and at a fair price.
- Cost-Effective Functional Equivalents to OEM Brand Fasteners-Why Pay More? – Reduce lead times and costs with the same quality and same performance. Try us for alternatives to brands like McMaster-Carr, MSC, Misumi, PEM, and RAF and experience unmatched savings! Same form, fit and function for less.
- Huge Selection of Certified and Commercial Hardware with Same-day Shipping Available for Countless Items – We source and stock standards, specials, commercial, Mil-Spec & OEM brands in inch and metric sizes. Standards include AN, NAS, MS, IFI, ASTM, ASME, DIN, ISO, JIS. We are sourcing experts for inserts, certified Mil-Spec parts and anything in stainless steel. Many parts are available with manufacturers’ certifications, including DFAR, ROHS and CoC. Trust us to ship on-time from our national distribution centers.
- A User-Friendly, 24/7 Online Shopping Experience – Enjoy a 24/7 online shopping experience with easy-to-use filters, detailed product information, and a constantly updated technical directory. Sign up now for a seamless experience!
- WBE/WOSB Certified Woman-Owned Small Business – As a certified Woman-Owned Small Business, we support your diversity goals. Trust us to meet your fastener and sourcing needs with expertise and efficiency [Cage Code 58QG4].
MF Supply is a WBE/WOSB certified supply chain partner to business, industry and government. We are sourcing experts and stocking distributors of Hardware, Precision & Mil-Spec Fasteners and Safety supplies. For more than 50 years, we have been supplying manufacturers in the electronics, industrial, commercial, aerospace and military markets with the full range of fastener products and services. Our Cage Code is 58QG4 and our registered name is RL Supply Inc dba MF Supply.
Mastering Mil-Spec Dowel Pins: Fit, Material, and Series Made Simple
Posted: October 28, 2025 Filed under: dowel pin, M21143, Mil-Spec, Mil-Spec Fasteners, Mil-Spec Precision Dowel Pins, MS16555, MS16555, MS16556 and Mil-P-21143., MS16556, PRECISION DOWEL PIN | Tags: Fasteners, Guide, M21143, Mil-Spec Dowel Pins, Mil-spec fasteners, Mil-Spec Fasteners Distributor, Mil-Spec Fasteners Supplier, Mil-Spec Precision Dowel Pins, Military Dowel Pins, Military Fasteners, Military Fasteners Supplier, MS Dowel Pins, MS16555, MS16556 Leave a comment
What Makes Mil-Spec Dowel Pins Different?
Mil-Spec (Military Standard) dowel pins are precision-ground, solid headless fasteners engineered for exact alignment, location, and secure assembly of components in aerospace, defense, and precision manufacturing.
They are produced under strict Mil-Spec specifications to ensure dimensional accuracy, repeatability, and conformance. Unlike commercial pins, Mil-Spec versions must be tested and certified for mechanical properties, hardness, and finish supported by documentation packages that may include Material Test Reports (MTRs), Certificates of Conformance (COCs), Heat Treat Certifications and DFARs compliance statements.
Dowel pins are commonly used as hinges, shafts, pivots, or locating devices to align or secure parts within precision assemblies or fixtures.
Four Common Mil-Spec Dowel Pin Series
Not all dowel pins are created equal. Each Mil-Spec series follows strict guidelines for fit, tolerance, material and other attributes to ensure accuracy and repeatability in demanding applications. Whether double-chamfered or featuring a radius and chamfer combination, these pins play a vital role in precision alignment. Below we deconstruct the taxonomy and attributes of the four series most frequently used in military and aerospace manufacturing.
1 – MS16555 — Standard Headless Dowel Pin (Press Fit)
Equivalent: Similar to ASME B18.8.2 standard series
- Design: Straight, solid headless dowel pin normally made with a chamfered crown on one end and a chamfer on the other
- Fit Type: Provides a standard interference/press fit
- Tolerance: -0 / +0.0002 over nominal size
- Material Options:
- MS16555-1 to -145: Steel (Carbon or Alloy), hardened
- MS16555-301 to -444: Phosphate-coated Steel, hardened
- MS16555-601 to -744: CRES 410/416 Stainless Steel, hardened and passivated
- Diameter Range: 1/16″ (.0626–.0628) to 1″ (1.0001–1.0003)
- Length Range: 3/16″ to 6″ (lengths over 3″ may be limited)
- Applications: Ideal for vibration-resistant, high-strength alignment in aircraft and defense assemblies
➡️ Available for purchase online or RFQ
2 – MS16556 — Oversize Headless Dowel Pin (Extended Length / Oversize Fit)
Equivalent: Similar to ASME B18.8.2 oversize standard series
- Design: Straight, solid headless dowel pin normally made with a chamfered crown on one end and a chamfer on the other (Similar to MS16555 with oversize tolerance)
- Fit: Oversize interference fit
- Tolerance: -0 / +0.001 over nominal diameter
- Material Options:
- MS16556-1 to -144: Steel (Carbon or Alloy), hardened
- MS16556-301 to -444: Phosphate-coated Steel, hardened
- MS16556-601 to -744: Stainless Steel, hardened and passivated
- MS16556-801 to -944: Cadmium-plated Steel, hardened
- Diameter Range: 1/16″ to 1″
- Length Range: 3/16″ to 6″ (extended per spec; over 3″ limited)
- Applications: Ideal for worn holes and to replace pins that no longer fit securely.
➡️ Now available for RFQ at mfsupply.com
MIL-P-21143 Series
3 – M21143/1 — CRES 303 Stainless Steel Dowel Pin (Press Fit)
Specification: MIL-P-21143
- Design: Straight, headless pin with .015/.010 x 45° chamfer on both ends
- Fit: Press fit — standard interference fit (referred to as “Oversize” in spec)
- Tolerance: -0 / +0.0002 over nominal
- Material: CRES 303 Stainless Steel
- Diameter Range: 1/16″ to 1″
- Applications: Used to join moving components or in high-precision assemblies requiring corrosion resistance and tight alignment
➡️ Available for RFQ at mfsupply.com
4 – M21143/2 — CRES 303 Stainless Steel Dowel Pin (Slip Fit / Undersize)
- Design: Produced similar to M21143/1, straight, headless dowel pin with precision-ground surfaces, generally produces with a .015/.010 x 45° chamfer both ends
- Fit: Slip fit — slightly undersized for easy removal or adjustment
- Tolerance: +0 / -0.0002 under nominal diameter
- Material: CRES 303 Stainless Steel.
- Applications: Used in assemblies requiring frequent disassembly or maintenance; ideal for prototypes or variable-fit applications
➡️ Available for RFQ at mfsupply.com
Choosing the Right Material
| Material | Key Traits | Common Uses |
| Alloy/Carbon Steel (Plain, Cadmium, Phosphate) | High strength, durable | Heavy-load or high-temp applications |
| CRES 410/416 Stainless Steel | Hardened, corrosion-resistant | Aerospace and defense |
| CRES 303 Stainless Steel | Corrosion-resistant, easy to machine | Slip-fit and/or precision alignment |
All Mil-Spec dowel pins from MF Supply include Manufacturer’s Certificates of Conformance. Full certification packages — MTRs, Dimensional Reports, Heat-Treat, Passivation, and DFARS statements — are available upon request and may incur a fee.
👉 Checkout our Mil-Spec Precision Dowel Pins Cross-Reference Charts
Checklist: Sourcing the Correct Mil-Spec Dowel Pin
Before placing your RFQ or order, confirm:
- Specification / Part Number – e.g., MS16555, MS16556, M21143/1, M21143/2. Check the diameter, length, tolerance, material and all specs to the Mil-Spec print.
- Material & Finish – Match environment and strength needs.
- Fit / Tolerance – Choose standard press fit, oversize, or slip fit as required.
- Documentation – Determine your paperwork requirements at every stage of the process from initial RFQ to receiving inspection to insure audit readiness.
Mil-Spec Dowel Pins from MF Supply
MF Supply is your WBE/WOSB-certified U.S. distributor for certified, commercial, and custom dowel pins, including:
- MS16555, MS16556, M21143/1, and M21143/2 series
- Alloy and CRES Stainless Steel options
- Certification packages (MTRs, COCs, Passivation, DFARS, Heat-Treat)
- Fast RFQ turnaround and domestic stock for quick delivery
- Made to order option for parts that are not COTs or for special sizes, materials and tolerances
We’re proud to announce that MS16556 dowel pins are now available for RFQ — joining our comprehensive Mil-Spec, metric, and precision dowel pin lineup.
👉 Visit MF Supply to request a quote or browse our catalog.
We are your Purchasing Department’s Secret Weapon for Mil-Spec hardware!
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Your Purchasing Department’s Secret Weapon!
Here are 5 reasons to buy from MF Supply
- We Source and Deliver What Others Can’t, Faster Than You Imagined – With speedy solutions for elusive parts and lengthy delivery times – We’ve got you covered with both custom-made specials (send us your prints!) and hard-to-source options, quickly and at a fair price.
- Cost-Effective Functional Equivalents to OEM Brand Fasteners-Why Pay More? – Reduce lead times and costs with the same quality and same performance. Try us for alternatives to brands like McMaster-Carr, MSC, Misumi, PEM, and RAF and experience unmatched savings! Same form, fit and function for less.
- Huge Selection of Certified and Commercial Hardware with Same-day Shipping Available for Countless Items – We source and stock standards, specials, commercial, Mil-Spec & OEM brands in inch and metric sizes. Standards include AN, NAS, MS, IFI, ASTM, ASME, DIN, ISO, JIS. We are sourcing experts for inserts, certified Mil-Spec parts and anything in stainless steel. Many parts are available with manufacturers’ certifications, including DFAR, ROHS and CoC. Trust us to ship on-time from our national distribution centers.
- A User-Friendly, 24/7 Online Shopping Experience – Enjoy a 24/7 online shopping experience with easy-to-use filters, detailed product information, and a constantly updated technical directory. Sign up now for a seamless experience!
- WBE/WOSB Certified Woman-Owned Small Business – As a certified Woman-Owned Small Business, we support your diversity goals. Trust us to meet your fastener and sourcing needs with expertise and efficiency [Cage Code 58QG4].
Mil-Spec Socket Cap Screws: A Complete Buyer’s Guide
Posted: September 22, 2025 Filed under: Mil-Spec, Mil-Spec Fasteners, MS16995, MS16996, MS16997, MS16998, MS24671, NAS1351, NAS1352, Socket Head Cap Screw | Tags: Fasteners, Guide, Mil-spec fasteners, Mil-Spec Fasteners Distributor, Mil-Spec Fasteners Supplier, Mil-Spec Socket Head Cap Screws, Military Fasteners, Military Fasteners Supplier, MS16995, MS16996, MS16997, MS16998, MS24671, NAS1351, NAS1352, Socket Cap Screws Leave a comment
When it comes to aerospace, defense, and mission-critical industrial applications, not all socket cap screws are created equal. While commercial socket cap screws can be sufficient for general manufacturing, Mil-Spec socket cap screws are engineered, tested, and certified to meet the stringent requirements of the U.S. military and defense supply chain.
In this guide, we’ll cover:
- The variations of Mil-Spec socket cap screws
- Materials, platings, and optional features
- The part number taxonomy (MS, NAS, NASM, AN designations)
- How Mil-Spec differs from commercial socket caps
- Typical applications and industries
- MF Supply’s Mil-Spec socket cap screw catalog offerings
Variations of Mil-Spec Socket Cap Screws
Mil-Spec socket cap screws (sometimes called MS or NAS socket head cap screws) come in multiple variations to meet specific performance requirements: The 2 main Mil-Spec standards are:
- Standard socket head cap screws – Cylindrical head, hexagonal drive. Designed for high-strength fastening where space is limited.
- Flat socket cap screws – Used in clearance-sensitive applications where flush mounting is critical.
Note: Low Head and Button Head socket cap screws do not have a Mil-Spec equivalent.
Mil-Spec socket head cap screws come in several varieties, including:
- Drilled heads (safety wire holes) – Feature cross-drilled holes in the head to allow safety wiring, preventing loosening in high-vibration environments like aircraft engines.
- Thread-locking (pre-applied patch) – Includes a nylon or chemical locking element on the threads, providing resistance to vibration loosening.
- Vent/drilled-through screws – Designed to eliminate trapped gas or contamination in vacuum or cleanroom environments.
Note: Varieties including threadlocking, drilled heads and vented options are less common and may only be available per special order with minimums and lead times.
Materials & Platings
Mil-Spec socket cap screws are offered in specific materials and platings with mechanical properties that meet or exceed ASTM/SAE standards. Common options include:
- Alloy Steel – High tensile strength, black oxide or cadmium plated for corrosion resistance
- CRES Stainless Steel (18-8/300 series stainless steel) – Corrosion resistance, often used in aerospace and marine environments
- CRES A286 Stainless Steel superalloy – Extreme temperature resistance, high strength and with excellent corrosion & oxidation resistance
Note: SS316 stainless steel is less common and may only be available by special order with minimums and lead times.
Platings and Coatings:
- Black Oxide (MIL-C-13924, Class 1) – Standard corrosion resistance
- Cadmium Plating (QQ-P-416) – Excellent corrosion resistance and lubricity. Widely specified in legacy Mil-Spec standards.
- Passivation (for stainless steels, QQ-P-35) – Removes surface contaminants and improves corrosion resistance.
Part Number Taxonomy
Military grade fasteners or “Mil-Spec” fasteners are usually designated by an AN, MS, NAS or NASM prefix followed by a part number. Each of these prefixes is an abbreviation: NAS stands for National Aerospace Standard and MS stands for Military Standard.
The Defense Supply Center Philadelphia (DSCP), part of the DLA (Defense Logistics Agency), has a Qualified Suppliers List for Manufacturers (QSLM) identifying pre-qualified sources for certain products purchased by DSCP. Referred to also as the QPL (Qualified Products List), manufacturers on this list are recognized by DSCP as meeting all necessary criteria, particularly regarding quality control and paperwork.
Each part number defines key parameters: head style, material, finish, thread class, and whether features like drilled heads or locking elements are included.
The main core part numbers identifying standard Mil-Spec socket head cap screws are MS16995, MS16996, MS16997, MS16998, NAS1351, and NAS1352. Flat head socket head cap screws fall under parts MS24671 and MS24672.
- MS (Military Standard) – Legacy part numbers (e.g., MS16995), still widely used in aerospace and defense
- NAS (National Aerospace Standards) – High-performance standards developed for aerospace (e.g., NAS1351, NAS1352)
- NASM – Updated versions of NAS standards under SAE governance
- AN (Army-Navy) – Older standards, often superseded by MS or NAS numbers
The base part is followed by a Material Code:
- “-” = Alloy Steel
- “C” = Corrosion Resistance Steel (18-8 stainless steel)
- “N” = Heat-Resistant Steel (A286)
- Let’s further break down a common Mil-Spec socket cap:
- For example: NAS1352N028, sometimes written as NAS1352N02-8
- 2-56 X 1/2 Mil-Spec Socket Head Cap Screw A286 Stainless Steel DFAR
- NAS1352 = Coarse thread Socket Head cap screw
- N = Heat-Resistant Steel (A286)
- 02 = 2-56 Diameter
- 8 = .500 or 1/2 screw length
Note: The Aerospace Industries Association maintains an updated list of NAS parts available to members and/or for purchase.
Why Mil-Spec Socket Caps Are Different from Commercial
Commercial socket caps may look identical to Mil-Spec socket caps. However, commercial fasteners may lack the controlled processes, documentation, and certifications required for military or aerospace projects.
Differences between Mil-Spec and commercial socket head cap screws may include:
1. Certification & Paperwork
Available Paperwork may include:
- Manufacturer’s Certificate of Conformance (C of C)
- Lot and heat traceability
- Dimensional testing
- Material Test Reports (MTRs)
- DFARS compliance certification for defense projects
2. Testing
Mil-Spec socket caps undergo rigorous mechanical, dimensional, and sometimes nondestructive testing to verify hardness, tensile strength, shear strength, plating thickness, and more.
3. Authorized Manufacturers
Manufacturers listed on the QPL (Qualified Products List), the Qualified Suppliers List for Manufacturers (QSLM), or those approved under aerospace quality systems (AS9100, NADCAP for plating, etc.) are authorized to produce Mil-Spec socket caps. This ensures supply chain integrity and reliability in defense applications.
Applications
Mil-Spec socket head cap screws are commonly used in:
- Aerospace & Defense – Aircraft structures, engines, avionics, and ground support equipment
- Military Vehicles & Marine – Tanks, ships, submarines, and defense electronics
Other industries use Mil-Spec fasteners because of their quality and traceability. Two examples include Precision Manufacturing where vibration, temperature extremes, or strict compliance require certified fasteners, and Medical & High-Tech Industries where cleanrooms, vacuums, or corrosive environments require traceability is essential.
MF Supply’s Mil-Spec Socket Cap Offerings
At MF Supply, we stock and source a broad catalog of Mil-Spec socket head cap screws including:
- NAS1351 & NAS1352
- MS16995, MS16996, MS16997, MS16998
- MS24671 & MS24672
- Variants with drilled heads, vent holes, and locking elements
- Multiple materials, platings, and DFARS-compliant options
We partner with only qualified U.S. and global manufacturers and provide full certification packages upon request.
Beyond strength and performance, the real differentiators are the certifications, testing, and compliance requirements that ensure supply chain integrity.
MF Supply has over 50 years of experience supplying Mil-Spec, DFARS-compliant, and certified hardware. Whether you need a handful of parts or long-term stocking solutions, we’re Your Purchasing Department’s Secret Weapon.
👉 Explore Our Catalog of Mil-Spec Socket Cap Screws or Request a Quote today.
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Your Purchasing Department’s Secret Weapon!
Here are 5 reasons to buy from MF Supply
- We Source and Deliver What Others Can’t, Faster Than You Imagined – With speedy solutions for elusive parts and lengthy delivery times – We’ve got you covered with both custom-made specials (send us your prints!) and hard-to-source options, quickly and at a fair price.
- Cost-Effective Functional Equivalents to OEM Brand Fasteners-Why Pay More? – Reduce lead times and costs with the same quality and same performance. Try us for alternatives to brands like McMaster-Carr, MSC, Misumi, PEM, and RAF and experience unmatched savings! Same form, fit and function for less.
- Huge Selection of Certified and Commercial Hardware with Same-day Shipping Available for Countless Items – We source and stock standards, specials, commercial, Mil-Spec & OEM brands in inch and metric sizes. Standards include AN, NAS, MS, IFI, ASTM, ASME, DIN, ISO, JIS. We are sourcing experts for inserts, certified Mil-Spec parts and anything in stainless steel. Many parts are available with manufacturers’ certifications, including DFAR, ROHS and CoC. Trust us to ship on-time from our national distribution centers.
- A User-Friendly, 24/7 Online Shopping Experience – Enjoy a 24/7 online shopping experience with easy-to-use filters, detailed product information, and a constantly updated technical directory. Sign up now for a seamless experience!
- WBE/WOSB Certified Woman-Owned Small Business – As a certified Woman-Owned Small Business, we support your diversity goals. Trust us to meet your fastener and sourcing needs with expertise and efficiency [Cage Code 58QG4].
MF Supply Is Now an Authorized Nord-Lock® Distributor!
Posted: March 4, 2025 Filed under: Custom Fasteners per print, Distributor, Domestic Fasteners, Fasteners, Mil-Spec, Mil-Spec Fasteners, Nord-Lock, Supply chain - manufacturing, Threaded Fasteners, Washers, Wedge Lock | Tags: aerospace, architectural metal and glass, contract manufacturers, equipment and machines, Fastener Sourcing Experts, Fasteners Distributor, Fasteners Supplier, Industrial Manufacturing, MF Supply is a Nord Lock distributor, Nord Lock Washers, Nord-Lock Distributor, Nord-Lock Wedge Locking Washers, OEMS of instrumentation, sheet metal fabrication, Wedge Lock Washers Leave a comment
MF Supply, a leading New Jersey-based WBE/SBE certified distributor and fastener sourcing expert, is thrilled to announce a significant expansion of our product line through a new partnership with Nord-Lock®, making us an authorized distributor. This expansion complements our vast range of commercial, mil-spec, domestic, and OEM branded fasteners, aligning with our commitment to meeting the evolving needs of the precision manufacturing industry.
Explore Nord-Lock’s Advanced Bolting Solutions
With over 35 years of expertise, Nord-Lock specializes in washers that ensure bolted joints remain secure under challenging conditions. Their innovative products range, available for RFQ directly on our website, includes:
- Wedge-Lock Washers: These are crafted to effectively secure bolted joints using tension, ideal for heavy machinery and transportation sectors.
- X-Series Washers: Combining wedge-locking with a spring effect, these washers address issues like thermal cycling and dynamic loads.
- Superbolt Tensioners: Simplify the tightening of large bolts, enhancing both efficiency and safety during installations.
- SC-Washers: Designed specifically for structural steel applications, they ensure optimal load distribution and are compliant with European standards.
MF Supply Expanding to Meet Industry Demands
This partnership with Nord-Lock adds to our recent catalog update, which now features over 43,928 unique items, including threaded and helical inserts, specialty bolts, socket cap screws, Acme, Captive, EZ-Lok and Holo-Krome branded products. Our expansion into Nord-Lock products supports industries such as aerospace, energy, and manufacturing, providing our clients with top-tier, reliable fastening solutions.
By bolstering our product offering in these key areas, we aim to be the preferred supplier for manufacturers in various sectors, including: aerospace, OEMS of instrumentation, equipment and machines, architectural metal and glass, sheet metal fabrication, contract manufacturers, lighting, furniture, and elevators.
Manufacturers working with us can expect timely deliveries, competitive pricing, and access to expert guidance to help optimize their fastener choices. Manufacturers eager to explore our product catalog, including our recently expanded product categories, are encouraged to visit our website at www.mfsupply.com, reach out to us at sales@mfsupply.com or request a quote. Our MF Supply team of sourcing experts will help find what you need. “Finding the right screw for you” is our tag line after all!
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Your Purchasing Department’s Secret Weapon!
Here are 5 reasons to buy from MF Supply
- We Source and Deliver What Others Can’t, Faster Than You Imagined – With speedy solutions for elusive parts and lengthy delivery times – We’ve got you covered with both custom-made specials (send us your prints!) and hard-to-source options, quickly and at a fair price.
- Cost-Effective Functional Equivalents to OEM Brand Fasteners-Why Pay More? – Reduce lead times and costs with the same quality and same performance. Try us for alternatives to brands like McMaster-Carr, MSC, Misumi, PEM, and RAF and experience unmatched savings! Same form, fit and function for less.
- Huge Selection of Certified and Commercial Hardware with Same-day Shipping Available for Countless Items – We source and stock standards, specials, commercial, Mil-Spec & OEM brands in inch and metric sizes. Standards include AN, NAS, MS, IFI, ASTM, ASME, DIN, ISO, JIS. We are sourcing experts for inserts, certified Mil-Spec parts and anything in stainless steel. Many parts are available with manufacturers’ certifications, including DFAR, ROHS and CoC. Trust us to ship on-time from our national distribution centers.
- A User-Friendly, 24/7 Online Shopping Experience – Enjoy a 24/7 online shopping experience with easy-to-use filters, detailed product information, and a constantly updated technical directory. Sign up now for a seamless experience!
- WBE/WOSB Certified Woman-Owned Small Business – As a certified Woman-Owned Small Business, we support your diversity goals. Trust us to meet your fastener and sourcing needs with expertise and efficiency [Cage Code 58QG4].
MF Supply Recertified as a Small Woman-Owned Business Enterprise!
Posted: January 22, 2025 Filed under: Custom Fasteners per print, Domestic Fasteners, Electronic Hardware, Fasteners, Mil-Spec Fasteners, Panel Fasteners, Supply chain - manufacturing | Tags: Certifications, Fasteners, Fasteners Distributor, Fasteners Supplier, Hardware, Inclusion & Diversity, MF Supply Recertified, Mil-spec fasteners, Military Fasteners, SBE, Small Business Enterprise, Supply Chain Partner, WBE, Women Owned Business Leave a comment
MF Supply, a leading distributor of fasteners and hardware, is proud to announce that we have successfully been recertified as a Women’s Business Enterprise (WBE) and Small Business Enterprise (SBE) by the state of New Jersey. This certification reaffirms MF Supply’s commitment to providing high-quality products while fostering diversity and inclusion in the manufacturing and distribution sectors.
How Does This Benefits You
- Meet Your Diversity Goals: As a certified WBE and SBE supplier, we can help your business fulfill inclusion and diversity requirements while ensuring top-tier service and reliability.
- Hard-to-Find Parts? Solved! From mil-spec fasteners to custom hardware, we specialize in sourcing hard-to-find components like Keensert® style key-locking inserts, helical inserts, dowel pins, socket head cap screws and more—all with precision and speed.
- Decades of Expertise: Partner with a team that understands your needs. Whether it’s aerospace engineering, manufacturing, or government projects, we act as an extension of your purchasing departments providing lightning-fast responses, direct support, and competitive pricing.
Why Choose MF Supply?
With 50 years of fastener experience, we offer lightning-fast responses, direct phone support, free samples, and act as an extension of your team. We are fastener & sourcing experts, so you don’t have to be. With vast experience as a leading supplier and distributor of commercial and Mil-Spec fasteners, both in inch and metric sizes, we excel in providing:
- A vast inventory of certified and commercial hardware with same-day shipping available.
- Cost-effective solutions for OEM brand equivalents like McMaster-Carr, PEM, and RAF.
- 24/7 online shopping with a user-friendly experience at www.mfsupply.com.
Featured Products:
Some of our featured product lines include:
- Keensert® Style Key-Locking Inserts
- Helical Inserts (aka HeliCoil®)
- Precision Dowel Pins
- Precision Shoulder Screws
- Socket Head Cap Screws
- Other Socket Products
- Standoffs & Spacers
- Mil-Spec Fasteners
- Custom-made and reworked hardware and components
Manufacturers working with us can expect timely deliveries, competitive pricing, and access to expert guidance to help optimize their fastener choices. Visit our website, Connect with our team or send us a request for quote and our team of sourcing experts will help you find what you need. “Finding the right screw for you” is our tag line after all!
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Your Purchasing Department’s Secret Weapon!
Here are 5 reasons to buy from MF Supply
- We Source and Deliver What Others Can’t, Faster Than You Imagined – With speedy solutions for elusive parts and lengthy delivery times – We’ve got you covered with both custom-made specials (send us your prints!) and hard-to-source options, quickly and at a fair price.
- Cost-Effective Functional Equivalents to OEM Brand Fasteners-Why Pay More? – Reduce lead times and costs with the same quality and same performance. Try us for alternatives to brands like McMaster-Carr, MSC, Misumi, PEM, and RAF and experience unmatched savings! Same form, fit and function for less.
- Huge Selection of Certified and Commercial Hardware with Same-day Shipping Available for Countless Items – We source and stock standards, specials, commercial, Mil-Spec & OEM brands in inch and metric sizes. Standards include AN, NAS, MS, IFI, ASTM, ASME, DIN, ISO, JIS. We are sourcing experts for inserts, certified Mil-Spec parts and anything in stainless steel. Many parts are available with manufacturers’ certifications, including DFAR, ROHS and CoC. Trust us to ship on-time from our national distribution centers.
- A User-Friendly, 24/7 Online Shopping Experience – Enjoy a 24/7 online shopping experience with easy-to-use filters, detailed product information, and a constantly updated technical directory. Sign up now for a seamless experience!
- WBE/WOSB Certified Woman-Owned Small Business – As a certified Woman-Owned Small Business, we support your diversity goals. Trust us to meet your fastener and sourcing needs with expertise and efficiency [Cage Code 58QG4].
Mil-Spec Fasteners in Stock at MF Supply
Posted: November 27, 2024 Filed under: Mil-Spec, Mil-Spec Electronic Hardware, Mil-Spec Fasteners | Tags: Fasteners, Hardware, Mil-spec fasteners, Mil-Spec Fasteners Distributor, Mil-Spec Fasteners Supplier, Mil-Spec Helical Inserts, Mil-Spec Hex Head Cap Screws, mil-spec keenserts, Mil-Spec Self-Tapping Screws, Mil-Spec Set Screws, Mil-Spec Socket Head Cap Screws, Military Electronic Hardware Supplier, Military Fasteners, Military Fasteners Supplier, supply chain Leave a comment
Are you searching for certified Mil-Spec fasteners to meet your bill of requirements (BOM) or project specifications? Look no further! MF Supply specializes in sourcing and supplying domestically manufactured AN, MS, and NAS Mil-Spec fasteners for aerospace, defense, and industrial applications. MF Supply stocks over 3,000 unique certified parts from the Qualified Suppliers List for Manufacturers & Distributors (QSLM & QSLD). Mil-Spec products stocked include Keensert® Style Key-Locking Inserts, Helical (HeliCoil®) Inserts, Precision Dowel Pins, Slotted Spring Pins, Extended Prong Cotter Pins, Nuts, Washers, Machine Screws, Precision Shoulder Screws, Hex Head Cap Screws/Bolts, Socket Head Cap Screws, Set Screws, Self-Tapping Screws and more. All Mil-Spec parts undergo rigorous testing and are DFARS or domestically manufactured with Certificate of Conformance (COC) and Material and Physical certification paperwork available to ensure compliance.
Buy Mil-Spec Fasteners and Precision Electronic Hardware at MF Supply!
We Have All the Mil-Spec Fasteners and Precision Hardware You Need
We offer a huge selection of DFARS certified and domestic Mil-Spec fasteners directly on our website, making it easier for you to find exactly what you need for your project at the click of a button or via RFQ depending on your preferred method of procurement. Below is a list of some of our most popular Mil-Spec product categories available:
1 – Mil-Spec Keensert® Style Key-Locking Inserts
- Standards: MS51830, MS51831, MS51832, NA0146, NA0147, NA0148, NA0149, NA0150, NA0151, and NAS1395.
- Styles: Miniature, Thin Wall, Heavy Duty, Thick Wall, and Extra Heavy Duty
- Available Sizes: 2-56 to 1/2-13 Internal thread for inch sizes and M2 x 0.4 to M24 x 2 for metric sizes
- Materials: 4140 alloy steel, Nitronic 60, CRES A286 and 303 series stainless steel
- Applications: Can be used to create new threads, for thread reinforcement, and to repair stripped threads
2 – Helical Inserts (aka HeliCoil®)
- Standards: MS121, MS122, MS124, MS21209, MA3279, and MA3329
- Styles: Free-running and self-locking
- Available Sizes: #2-56 to 1½-6 for inch sizes and M2 to M36 for metric sizes
- Materials: CRES 300/18-8 stainless steel
- Applications: Can also be used to create new threads, for thread reinforcement, to convert threads between inch and metric sizes, and to repair stripped threads
3 – Mil-Spec Precision Dowel Pins
- Standards: MS16555, MS16556, and MIL-P-21143
- Styles: Interference/Press Fit, Undersize/Slip Fit and Oversize +.001
- Sizes: Diameters from 1/32 to 1 inch and lengths from 3/32 to 6 inches
- Materials: CRES 303, 400, 416 series stainless steel
- Applications: Can be used as a hinge, shaft, precise location device or pivot to align or secure parts within a precision assembly or fixture
4 – Mil-Spec Slotted Spring Pins
- Standards: MS16562
- Styles: Slotted
- Sizes: Diameters from 1/16 to ½ inch and lengths from 3/16 up to 3 inches long
- Materials: Alloy steel with a zinc phosphate finish
- Applications: Can be used as a hinge or shaft for the purpose of securing and fastening components together
5 – Mil-Spec Extended Prong Cotter Pins
- Standards: MS9245
- Styles: Extended Prong
- Sizes: Diameters from 1/32 to 5/32 inch and lengths from 1/4 to 1/2 inches long
- Materials: T321 stainless steel
- Applications: Designed to retain/secure a variety of fasteners such as bolts, nuts and pins in place and prevent them from sliding or coming out
6 – Mil-Spec Hex Finished Nuts
- Standards: MS51967B & MS51967C
- Styles: Grades B & C
- Sizes: Stock sizes from 1/4-20 through 3/4-10 inches thread
- Materials: Alloy steel with a cadmium yellow finish
- Applications: Used to fasten parts together by pairing and tightly securing bolts in place
- Standards: MS35649 & MS35650
- Available Sizes: Stock sizes from 2-56 through 3/8 thread
- Materials: Alloy steel cadmium yellow and 300/18-8 series stainless steel
- Applications: Typically paired with bolts or screws to ensure parts/components stay firmly fastened in place
8 – Mil-Spec Washers
- Standards: MS51848, NAS620, MS35333, MS35335, MS35338, AN960, AN960-C, AN970, MS15795, MS27183, NAS1149 & NAS620
- Styles: flat, light flat, flat machine screw, split lock, high collar split lock, internal tooth lock, and external tooth lock
- Materials: Carbon steel, Alloy steel and 300/18-8, 316, 400 series stainless steel
- Applications: Distribute the load of a fastener, such as a bolt or screw, over a larger surface area. This in turn helps reduce the effects of wear, damage or vibration on the fastener assembly by providing a cushion between the fastener head and the parent material
- Standards: MS24693, MS35190, MS35191, MS35206, MS35207, MS35265, MS35266, MS35275, MS35276, MS51957, MS51958, MS51959, & MS51960
- Styles: 82d & 100d Flat Phillips, Drilled Slotted Fillister, Philips Pan Head
- Available Sizes: Diameters range from 0-80 to 3/8-16 inches with lengths ranging from 3/32 to 3 inches long
- Materials: Carbon steel, Alloy steel, and 300/18-8 series stainless steel
- Applications: Often used in conjunction with other fastening elements, such as washers and nuts, they have uniform threads that when fastened engage with corresponding threads in a tapped hole or nut, creating a secure mechanical connection between components
10 – Mil-Spec Precision Shoulder Screws
- Standards: MS51576 & MS51575
- Styles: Hex and slotted drives
- Available Sizes: Stock sizes range from 4-40 to 3/8-16 thread
- Materials: 300/18-8 series stainless steel
- Applications: Feature a cylindrical unthreaded shoulder that serves as a dowel or pivot point for rotating parts, also used to hold parts together within a precision assembly
11 – Mil-Spec Hex Head Cap Screws/Bolts
- Style: Hex head
- Standards: MS35307, MS35308, MS90725, MS90726, MS90728G & MS90727F, B1821
- Sizes: Stock sizes range from 1/4-20 through 1-1/4 diameter
- Materials: Alloy steel, 300/18-8 Series Stainless Steel
- Applications: Their hexagonal heads allow for the application of high torque using a wrench or socket, which enables a very tight and secure fastening for load-bearing structures in military vehicles, aircrafts and more
- Style: Socket head
- Standards: NAS1352C / MS16995, NAS1351C / MS16996, MS16997, MS16998, NAS1351N & NAS1352N, & MS24671
- Sizes: Stock sizes range from 0-80 through 1-1/2 diameter
- Materials: Alloy steel, 300/18-8 series stainless steel, A286
- Applications: These screws have a cylindrical head with a hexagonal recess (socket) that allows for tightening with an Allen wrench/hex key. The socket head design allows for use in applications where there is limited space. The hexagonal socket allows for precise control during assembly, ensuring the screw is driven straight and accurately into the desired position
Can’t find what you’re looking for in the list above? Send us an RFQ with the product description or part number that you are looking for and our MF Supply team of sourcing experts will help find what you need!
Why Buy Mil-Spec Fasteners from MF Supply?
When precision, compliance, and reliability are non-negotiable, MF Supply stands out as a trusted partner for mil-spec fasteners. Here’s why industrial buyers across aerospace, robotics, defense, and manufacturing sectors turn to MF Supply:
Compliance and Certification: MF Supply’s mil-spec fasteners meet stringent U.S. Department of Defense (DoD) specifications, including MS51830, MS51831, and more. Each fastener is available with Material and Physical Test Reports, Certificates of Conformance, and DFARS/Domestic Statements—providing peace of mind for critical applications.
Sourcing Expertise: MF Supply works with the best factories across fastener categories, offering tailored solutions based on your budget, delivery and certification needs.
Reliability Across Critical Industries: Serving aerospace, defense, robotics, automotive, and manufacturing sectors for over 50 years, MF Supply is a trusted partner for industries where delivery times, precision and reliability are non-negotiable.
Shop Over 3,000 Unique Mil-Spec Fasteners and Precision Hardware Directly on Our Website!
Manufacturers working with us can expect timely deliveries, competitive pricing, and access to expert guidance to help optimize their fastener choices. Manufacturers eager to explore our Mil-Spec products’ catalog, including our other recently expanded product categories, are encouraged to visit our website at www.mfsupply.com, reach out to us at sales@mfsupply.com or request a quote. Our MF Supply team of sourcing experts will help you find what you need. “Finding the right screw for you” is our tag line after all!
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Your Purchasing Department’s Secret Weapon!
Here are 5 reasons to buy from MF Supply
- We Source and Deliver What Others Can’t, Faster Than You Imagined – With speedy solutions for elusive parts and lengthy delivery times – We’ve got you covered with both custom-made specials (send us your prints!) and hard-to-source options, quickly and at a fair price.
- Cost-Effective Functional Equivalents to OEM Brand Fasteners-Why Pay More? – Reduce lead times and costs with the same quality and same performance. Try us for alternatives to brands like McMaster-Carr, MSC, Misumi, PEM, and RAF and experience unmatched savings! Same form, fit and function for less.
- Huge Selection of Certified and Commercial Hardware with Same-day Shipping Available for Countless Items – We source and stock standards, specials, commercial, Mil-Spec & OEM brands in inch and metric sizes. Standards include AN, NAS, MS, IFI, ASTM, ASME, DIN, ISO, JIS. We are sourcing experts for inserts, certified Mil-Spec parts and anything in stainless steel. Many parts are available with manufacturers’ certifications, including DFAR, ROHS and CoC. Trust us to ship on-time from our national distribution centers.
- A User-Friendly, 24/7 Online Shopping Experience – Enjoy a 24/7 online shopping experience with easy-to-use filters, detailed product information, and a constantly updated technical directory. Sign up now for a seamless experience!
- WBE/WOSB Certified Woman-Owned Small Business – As a certified Woman-Owned Small Business, we support your diversity goals. Trust us to meet your fastener and sourcing needs with expertise and efficiency [Cage Code 58QG4].
Ultimate Guide: Inch, Metric, and Mil-Spec Precision Shoulder Screws Cross Reference Charts and Guide
Posted: July 25, 2024 Filed under: Cross Reference Charts, DFARS, Functional Equivalents, Mil-Spec, MS51575, MS51576, Precision Shoulder Screws, Shoulder Bolts, Shoulder Screws | Tags: Cross Reference Guide, Functional Equivalents, Mcmaster-Carr 94035A208, Metric Shoulder Bolts, Metric Shoulder Screws, Mil Spec Shoulder Screws, Mil-Spec Shoulder Screws, Precision Manufacturers, Precision Shoulder Screws Leave a comment
At MF Supply, we spend a lot of time sourcing hard to find, back ordered, expensive, or out-of-stock OEM hardware brands. We do this in order to save money and to reduce long lead times for our customers, without sacrificing quality. One of our core competencies is crossing brand names to functionally equivalent parts that maybe Mil-spec, alternative brands or generic parts.
What Is a Functional Equivalent Fastener?
In the fastener industry, a functional equivalent fastener is a component/part that matches a brand-name product in form, fit, and function, including material and plating specifications, but is produced by a different manufacturer. As a result, the industrial marketplace features a myriad of fasteners and components that are registered under various trademark brands, but that offer the same functionality. This, in turn, allows you to achieve the same product performance and quality desired at a potential lower cost and with shorter lead times than you would get with fasteners from well know or expensive brands.
Does My OEM Brand Have A Functional Equivalent or Alternative Fastener?
Many OEM brands available in the industry today have generic functional equivalents or alternatives. Below is a comprehensive list of popular brand names that show up quite often in the fasteners space and that have generic equivalent or alternative options to their OEM branded products:
3 Star Rivets USA, ABBATRON®, ALCOA, AMATOM®, APEX®, ARCONIC®, ATLAS®, AVDEL®, AVK®, B. F. GOODRICH, BOLLHOFF, BUCKEYE, CAPTIVE, CELUS®, CHERRY®, CONCORD, FASTENAL, GESIPA®, GLOBE ELECTRONICS, GRIPCO®, H. H. SMITH, HELICOIL®, HOWMET, HUCK, INDUX, INTERFAST, KATO®, KEENSERT®, KEYSTONE, LOCTITE®, LYN-TRON, MACLEAN ESNA®, MARSON®, MCMASTER-CARR, MISUMI, MSC INDUSTRIAL, PEM®, PIC DESIGN®, POP®, POWERS®, QUICKSCREWS, RAF, RECOIL®, RED HEAD®, ROTOR CLIP®, SHEREX, SIMPSON, SOUTHCO®, SPS TECHNOLOGIES, TINNERMAN®, U. S. ANCHOR, UNICORP, VIP, W. M. BERG, W. W. GRAINGER, WALDES TRUARC®.
Do Precision Shoulder Screws Have Functional Equivalents?
Yes! Precisions shoulder screws, also known in the industry as just shoulder screws or tight tolerance shoulder screws, do have functional equivalents. In fact, one surefire way to save money and shorten delivery time is to cross the OEM branded precision shoulder screw on your bill of materials to a functional equivalent.
Popular brands in the precision shoulder screws space include: Amatom, Cambion, Concord, Globe, HH Smith, Keystone, Lyn-tron, Misumi, Pic Design, RAF, and WM Berg. A comprehensive selection of Precision Shoulder Screws is also offered by McMaster-Carr, MSC, and Grainger.
Let’s take, for example, the following inch/imperial sized precision shoulder screw: 3/16” shoulder diameter x 1” long x 8-32 thread in SS18-8 (300 Series) with a hex-socket drive. This shoulder screw is offered by the seven brands listed below under the following part numbers:
- Grainger: 6JY20
- Lyn-tron: SS7431-00
- McMaster-Carr: 94035A208
- MSC Industrial: 67313726
- Pic Design: 4423
- RAF: 6931-SS
- WM Berg: PZ-14-3
You can also locate precision shoulder screws by Mil-Spec numbers, which include MS51575 and MS51576; all of which are DFARS compliant with full paperwork/documentation. The above mentioned shoulder screw or part, for instance, is equivalent to a Mil-Spec MS51576-14.
At MF Supply, we offer an extensive cross-reference guide to help you discover the ideal alternative for your requirements. Explore our most popular precision shoulder screws cross reference charts below to find functional equivalents to your OEM-branded products!
Precision Shoulder Screws Cross-Reference Charts: Find OEM Brands and Functional Equivalents
Precision inch hex socket shoulder screws and precision inch slotted shoulder screws are available in 416 Series Stainless Steel. Stock sizes include 1/8 through 1/2 diameters.
Precision inch hex socket shoulder screws and precision inch slotted shoulder screws are also available in 300 Series Stainless Steel. Stock sizes include 1/8 through 1/2 diameters.
Precision metric hex socket shoulder screws are available in 18-8, 300 & 416 Series Stainless Steel. Stock sizes include M4 through M12 diameters.
Precision metric slotted socket shoulder screws are available in 18-8, 300 & 416 Series Stainless Steel. Stock sizes include M4 through M12 diameters.
Precision Mil-Spec hex socket shoulder screws, MS51576, are available in 300 Series Stainless Steel. Stock sizes include 4-40 through 3/8-16 diameters.
Precision Mil-Spec slotted socket shoulder screws, MS51575, are available in 300 Series Stainless Steel. Stock sizes include 1/8 through 1/2 diameters.
Using functional equivalents, including generics and other OEM brands’ versions of precision shoulder screws, is a practice smart manufacturer’s often use to save money and shorten lead times!
Precision Shoulder Screws at MF Supply
MF Supply is a leading supplier of precision shoulder screws including major brands and equivalents. We stock a huge inventory including parts that are commercial and mil-spec. Our Mil-Spec products are DFAR compliant with COC and full certifications available upon request.
Precision shoulder screws are available in imperial, mil-spec, and metric sizes, and in type 18-8/303, 300 Stainless Steel and in 416 Stainless Steel – 316 Stainless Steel, Alloy and other exotic materials are also available for special order.
Product Lines Include:
- Inch Precision Shoulder Screws
- Metric Precision Shoulder Screws
- Mil-Spec Precision Shoulder Screws – MS51575 & MS51576
Manufacturers working with us can expect timely deliveries, competitive pricing, and access to expert guidance to help optimize their fastener choices. Manufacturers eager to explore our product catalog, including our recently expanded product categories, are encouraged to visit our website at www.mfsupply.com, reach out to us at sales@mfsupply.com or request a quote. Our MF Supply team of sourcing experts will help you find what you need. “Finding the right screw for you” is our tag line after all!
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Your Purchasing Department’s Secret Weapon!
Here are 5 reasons to buy from MF Supply
- We Source and Deliver What Others Can’t, Faster Than You Imagined – With speedy solutions for elusive parts and lengthy delivery times – We’ve got you covered with both custom-made specials (send us your prints!) and hard-to-source options, quickly and at a fair price.
- Cost-Effective Functional Equivalents to OEM Brand Fasteners-Why Pay More? – Reduce lead times and costs with the same quality and same performance. Try us for alternatives to brands like McMaster-Carr, MSC, Misumi, PEM, and RAF and experience unmatched savings! Same form, fit and function for less.
- Huge Selection of Certified and Commercial Hardware with Same-day Shipping Available for Countless Items – We source and stock standards, specials, commercial, Mil-Spec & OEM brands in inch and metric sizes. Standards include AN, NAS, MS, IFI, ASTM, ASME, DIN, ISO, JIS. We are sourcing experts for inserts, certified Mil-Spec parts and anything in stainless steel. Many parts are available with manufacturers’ certifications, including DFAR, ROHS and CoC. Trust us to ship on-time from our national distribution centers.
- A User-Friendly, 24/7 Online Shopping Experience – Enjoy a 24/7 online shopping experience with easy-to-use filters, detailed product information, and a constantly updated technical directory. Sign up now for a seamless experience!
- WBE/WOSB Certified Woman-Owned Small Business – As a certified Woman-Owned Small Business, we support your diversity goals. Trust us to meet your fastener and sourcing needs with expertise and efficiency [Cage Code 58QG4].
MF Supply Expands Online Product Catalog to 22,189 Unique Items and Counting!
Posted: October 26, 2023 Filed under: Bolts, DFARS, Fasteners, Holo-Krome, Mil-Spec, Plastite Alternative Screws, Socket Head Cap Screw, Supply chain - manufacturing, Taptite Alternative Screws, Threaded Fasteners, Trilobular Fasteners | Tags: Bent Anchor Bolts, Bolts, Carriage Bolts, Closed Eye Screws, Commercial Fasteners, Distributor, Elevator Bolts, Flange Bolts, Hanger Bolts, Heavy Hex Bolts, Heavy Hex Structural Bolts, Hex Head Cap Screws, Hex Head Joint Draw Bolts, Hex Machine Bolts, Hex Tap Bolts, Holo-krome, Industrial Manufacturers, Inserts, MF Supply, Mil-spec, Mil-spec fasteners, Open Eye Bolts, Plastite Alternative Screws, Plow Bolts, Precision Manufacturers, Socket Cap Screws, Sourcing Experts, Square Head Battery Bolts, Square Machine Bolts, Step Bolts, supply chain, Taptite Alternative Screws, Thread Forming Screws, Thread Rolling Screws, Timber Bolts, Track Bolts Leave a comment
Greetings to our precision manufacturing community!
MF Supply is a leading WOSB / WBE Certified distributor of commercial, mil-spec and custom made fasteners. With a legacy of over half a century and a reputation for continuously evolving to meet our customers’ needs, we are thrilled to announce the recent expansion of our online catalog to include a whopping 22,189 unique items! Our updated catalog now includes Holo-Krome branded products, non-standard, domestic and DFAR Socket Cap Screws, an extensive list of Bolts, and more Thread Rolling & Thread Forming Screws.
We are constantly evolving to meet the changing needs of manufacturers. With this strategic expansion, we underscore our commitment to as a comprehensive one-stop shop for commercial and mil-spec fasteners and hardware for industrial and precision manufacturers, ensuring our customers have a seamless and efficient purchasing experience online and offline.
New Product Highlights:
1. Socket Cap Screws: We have always stocked and sourced a variety of imported, domestic and mil-spec socket cap screws. Our recent expansion in this category include standard and nonstandard sizes, and a variety of standard and exotic materials. We are now offering more Button Head, Flat Head, Flat Head 100 degree, Low Head and Standard Socket head cap screws in a wider choice of materials including: A286, Brass, Inconel, Silicon Bronze, and 316 Stainless Steel, in addition to regular Alloy and 18-8 Stainless Steel.
2. Bolts: Our selection of bolts has undergone a significant enhancement and now includes 18 Bolt categories, in multiple sizes and materials. Materials offered include Steel, B7 Alloy, Stainless Steel, 316 Stainless Steel, Aluminum, Silicon Bronze, A2, A4, Brass, Inconel and Nickel-Copper. Our 18 bolts’ categories include:
- Bent Anchor Bolts
- Carriage Bolts
- Closed Eye Screws
- Elevator Bolts
- Flange Bolts
- Hanger Bolts
- Heavy Hex Bolts
- Heavy Hex Structural Bolts
- Hex & Square Machine Bolts
- Hex Head Cap Screw
- Hex Head Joint Draw Bolts
- Hex Tap Bolts
- Open Eye Bolts
- Plow Bolts
- Square Head Battery Bolts
- Step Bolts
- Timber Bolts
- Track Bolts
3. Holo-Krome Products: We are proud to announce the inclusion of Holo-Krome brand fasteners to our catalog. Holo-Krome, a reputable domestic OEM, is well known for their extensive offering of quality products within the Socket Products segment. We introduce the following Holo-Krome products that are now available for purchase directly in our website: Dowel Pins, Hex Socket Shoulder Screws, Socket Cap Screws, Allenuts, Socket Jam Screws, Socket Pressure Plugs, and Socket Set Screws.
4. Thread Rolling / Thread Forming Screws: We also expanded our online offering to now include over 2.7K alternatives to Plastite® & Taptite® Screws. Our recent expansion in this category include more Steel, Black Oxide and Stainless Steel screws. Our off the shelf products are ready to ship from multiple warehouses across the USA, and include:
- EJOT® PT®-Alternative, Metric
- Plas-Fix®45 and Plastite®-Alternate, Metric
- Plastite®-Alternative, Inch Sizes
- Taptite®-Alternative, Inch Sizes
- Taptite®-Alternative, Metric Sizes
By bolstering our product offering in these key areas, we aim to be the preferred supplier for manufacturers in various sectors, including: aerospace, OEMS of instrumentation, equipment and machines, architectural metal and glass, sheet metal fabrication, contract manufacturers, lighting, furniture, and elevators.
Manufacturers working with us can expect timely deliveries, competitive pricing, and access to expert guidance to help optimize their fastener choices. Manufacturers eager to explore our product catalog, including our recently expanded product categories, are encouraged to visit our website at www.mfsupply.com, reach out to us at sales@mfsupply.com or request a quote. Our MF Supply team of sourcing experts will help find what you need. “Finding the right screw for you” is our tag line after all!
“At MF Supply, we understand the dynamic needs of the manufacturing industry, including the balance of price, quality, availability and certification paperwork. The expansion of our product catalog demonstrates our commitment to being a one-stop solution for all fastener needs. Whether it’s standard fasteners, specialized custom hardware, mil-spec parts or OEM brand names like the trusted Holo-Krome brand, we have it all under one roof.” – Robin Lieberman, President of MF Supply.
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Six Reasons To Buy From MF Supply
- Full eCommerce Enabled Website With Technical Manual Available 24/7 – Visit our website and Create a New Account, track online orders, browse our product catalog, check technical specs, subscribe to our blog, or buy online. We are adding items and improving functionality daily!
- Same Day Shipping From The USA – Our hardware products are in stock and ship to you directly from our USA based distribution centers.
- Functional Equivalents To Expensive Brand Names- We stock and source alternatives to brand name fasteners, reducing long lead times and saving you money.
- Creatively Solve Problems – We are sourcing experts, offer competitive pricing and specialize in finding hard to find parts and reducing long deliveries.
- One-Stop Shopping On Certified Hardware – We stock and source a full line of fasteners including Mil-Spec, DFARS compliant and other industrial products.
- WBE/WOSB Woman Owned Certified Small Business – To meet your diversity & set-aside needs.
MF Supply is a WBE/WOSB certified supply chain partner to business, industry and government. We are sourcing experts and stocking distributors of Hardware, Precision & Mil-Spec Fasteners and Safety supplies. For more than 50 years, we have been supplying manufacturers in the electronics, industrial, commercial, aerospace and military markets with the full range of fastener products and services. Our Cage Code is 58QG4 and our registered name is RL Supply Inc dba MF Supply.
Precision Dowel Pins for Manufacturers: A Comprehensive Guide
Posted: August 24, 2023 Filed under: dowel pin, Fasteners, Inch, Metric, Metric Dowel Pins, Mil-Spec, Pins, PRECISION DOWEL PIN | Tags: ASME B18.8.2, Bulk Pins, Custom Dowel Pin, Dowel Pins for Manufacturers, Fasteners, Functional Equivalent Pins, Hardware, Heavy Duty Fasteners, Inch Dowel Pins, Mechanical Fasteners, Metal, Metric Dowel Pins, Mil-Spec Dowel Pins, MS16555, Pins, Pins for manufacturers, Precision Dowel Pin, Precision Fasteners Leave a commentConsidering Precision Dowel Pins for Your Next Project?
When you’re in the heart of the manufacturing industry, precision is not just a luxury; it’s a necessity. Components like dowel pins may seem small and inconsequential, but in this realm of precision manufacturing, they are paramount to ensuring accurate alignment and fit. Precision dowel pins, in particular, play an indispensable role in guaranteeing accurate alignment and secure fastening in a broad spectrum of applications. But with various tolerances, standards, materials, and sizes available, how do you make the right choice? It is important to know and understand these factors in order to make informed decisions that will meet your expectations & manufacturing needs.
What are Precision Dowel Pins?
At their core, precision dowel pins are simple cylindrical rods. The term “precision” implies that these pins are manufactured to very tight tolerances in order to ensure accurate fit in assemblies. Tolerances refer to the acceptable variation in dimensions from the specified value. The tighter the tolerance, the less variation there is—meaning that their dimensions are incredibly accurate. This precision ensures that dowel pins fit snugly into corresponding holes in two components, ensuring their exact/accurate alignment.
Standards & Tolerances
Several standards are followed in the production of precision dowel pins. The prevalent standard specifications come from the International Organization for Standardization (ISO), the Deutsche Industrie Norm (DIN), the American National Standards Institute (ANSI), and the Military Standard (MS/MIL-SPEC) of the United States. At a minimum, these standards specify the pin shape, and the diameter and length tolerance. These standards might also specify the pin hardness and surface finish. OEM branded dowel pins are handled separately and are addressed later in this blog.
ISO Standard: ISO 2338A & ISO 2338B (for unhardened pins) and ISO 8734 (for hardened pins) are common standards for dowel pins. Under these standards, precision dowel pins can be manufactured to either “M6” or “M5” tolerance classes, with “M6” being the more common of the two.
- For example, an “M6” tolerance for a 5 mm dowel pin might have a diameter tolerance of -0.014 to 0 mm. So, the pin could be anywhere from 4.986 mm to 5 mm in diameter.
DIN Standard: DIN 7 (for unhardened, solid dowel pins) and DIN 6325 & DIN 6325H (hardened, solid dowel pins). Similar to ISO standards, the typical tolerance for precision dowel pins under DIN standards is designated as “M6.” This is the standard fit for dowel pins and ensures a tight fit that might require light pressing or can sometimes be hand-driven depending on the exact material and hole conditions.
- For example, for a 5 mm dowel pin under the DIN 7 or DIN 6325 standard, the typical diameter tolerance might have and upper limit of 5.000 mm & a lower limit of 4.986 mm.
ANSI Standard: ANSI standard for dowel pins is ASME/ANSI B18.8.2. This standard defines sizes and tolerances for standard dowel pins, with the “Standard Series” being the most common.
- For example, for a 1/4 (.25) inch interference fit diameter pin, the diameter tolerance might be +0.0002 to 0.000 inch. So, the pin diameter could be anywhere from 0.2500 inches to 0.2502 inches in diameter.
MIL-SPEC Standard: MIL-SPEC standard for dowel pins, particularly those conforming to MS16555 and MIL-P-21143 have very specific tolerances to ensure reliability and consistency in critical military and aerospace applications.
- The MS16555 specifies a straight headless pin with a radius on one end and a chamfer on the other. The material can be Carbon or Alloy Steel or CRES 410 or 416 Stainless Steel. Available diameters range from 1/16 (.0626-.0628) through 1 inch (1.0003-1.0001). Lengths range from 3/16 to 6 inches long. Standard diameter tolerances are +.0002 over the nominal size.
- The M21143 specifies a a straight headless pin made of CRES 303 Stainless Steel. The Mil-P-21143/1 series has a tolerance up to +.0002 over the nominal size. The M21143/2 series has tolerance of .0002 Under its nominal size.
Material Choices
Different applications may require Precision dowel pins made from different materials. The most common materials in the market include:
- Stainless Steel: Offers corrosion resistance and is suitable for applications exposed to moisture or corrosive substances.
- Alloy Steel: Known for its strength and durability, it’s ideal for heavy-duty applications.
- Brass: Often used when there’s a need to avoid sparking or in applications with lower strength requirements (less common).
- Aluminum: Lightweight and resistant to corrosion, aluminum precision dowel pins are suitable for applications where weight is a concern (less common).
Sizes Available
The diameter of precision dowel pins usually varies from 1/32″ to more than 1″, and their lengths span from 3/16″ to multiple inches. Hence, precision dowel pins come in a wide range of sizes, but certain sizes are more commonly used across various manufacturing applications due to their adaptability and compatibility with standard components. Selecting the appropriate size for your specific application is essential for achieving a snug fit, best performance, cost-effectiveness, and durability.
OEM Branded Precision Dowel Pins
Precision Dowel Pins – OEM branded “Precision” dowel pins are manufactured by precision component brands such as Pic Design, WM Berg, Unicorp and others who have their own technical specifications and are not governed by DIN, ISO or ANSI / ASME standards. They are usually only offered in stainless steel through distributors of precision components.
What to Consider Before Buying
- Tolerance: Precision dowel pins have tight tolerances. Ensure that the pins you buy meet the specific tolerances required for your application.
- Environment: Consider the environment in which the pins will be used. If they’ll be exposed to corrosive substances or high temperatures, material choice becomes crucial.
- Custom Needs: If your application requires non-standard sizes or materials, you might need custom-made precision dowel pins.
- Quantity: Depending on the scale of your manufacturing, you may need precision dowel pins in bulk. Purchasing in larger quantities often results in cost savings!
- Supplier Reputation: Always source your precision dowel pins from reputable suppliers known for their quality and consistency.
Precision Dowel Pins at MF Supply
MF Supply is a WBE/WOSB woman owned business, and a trusted supplier of Functional Equivalents, including precision dowel pins, to OEMs, manufacturers, industry, and government. We are precision dowel pin experts, offering the full catalog of dowel pins in Inch, Metric, Military and OEM branded options in a wide selection of materials, sizes and specifications. As stocking distributors, many precision dowel pins are available and ready to ship today from our national distribution centers.
Browse through the links provided below to find the precision dowel pins that you need:
- Mil-Spec Precision Dowel Pins: The full range of commercial and MIL-SPEC parts (M21143, MS16555, MS9390), including parts that are USA made, DFARS and ROHS compliant.
- Inch Precision Dowel Pins: inch sizes to ASME ANSI B18.8.2 standards in alloy steel, stainless steel 18-8, 316, 400 series and hardened. Domestic and Imported options are available.
- Metric Precision Dowel Pins: Metric sizes including DIN 7, DIN 6325, and ISO 2338 and 8734 in alloy steel, A2 & A4 stainless steel
- Precision Series and OEM branded equivalents to PIC, BERG, both Inch & Metric precision dowel pins including Press-Fit A, B and Slip-Fit C series and all MD series pins in 416 and 303 stainless steel.
- Please send us a Request for Quote for any other dowel pins not listed.
- Custom made parts per print.
Your next step?
If you have additional questions or need help in selecting the right precision dowel pins for your next project, don’t hesitate to reach out to us or send us a quote request. Our team of sourcing experts is always ready to assist you on your journey to manufacturing excellence. “Finding the right screw for you” is our tag line after all!
Book a one-on-one consultation with our President, Robin, to discuss how MF Supply can help you solve your Industrial Sourcing, Fastener, and Safety concerns.
Six Reasons To Buy From MF Supply
- Full eCommerce Enabled Website With Technical Manual Available 24/7 – Visit our website and Create a New Account, track online orders, browse our product catalog, check technical specs, subscribe to our blog, or buy online. We are adding items and improving functionality daily!
- Same Day Shipping From The USA – Our hardware products are in stock and ship to you directly from our USA based distribution centers.
- Functional Equivalents To Expensive Brand Names- We stock and source alternatives to brand name fasteners, reducing long lead times and saving you money.
- Creatively Solve Problems – We are sourcing experts, offer competitive pricing and specialize in finding hard to find parts and reducing long deliveries.
- One-Stop Shopping On Certified Hardware – We stock and source a full line of fasteners including Mil-Spec, DFARS compliant and other industrial products.
- WBE/WOSB Woman Owned Certified Small Business – To meet your diversity & set-aside needs.
MF Supply is a WBE/WOSB certified supply chain partner to business, industry and government. We are sourcing experts and stocking distributors of Hardware, Precision & Mil-Spec Fasteners and Safety supplies. For more than 50 years, we have been supplying manufacturers in the electronics, industrial, commercial, aerospace and military markets with the full range of fastener products and services. Our Cage Code is 58QG4 and our registered name is RL Supply Inc dba MF Supply.