Custom Made & Reworked Fasteners

When off-the-shelf fasteners are not the right fit for an application, engineers and designers may require Custom Made fasteners. This may be for a prototype, a replacement of an existing part, or for a large-scale production run.  Learn more about what they are and how to get an accurate quote below.

Custom Made & Reworked Fasteners at MF Supply https://conta.cc/3AiegcZ


Installing Key Locking Inserts with Pneumatic Power Tools

In last week’s blog, we discussed when and how to install key locking inserts manually. If you have a few hundred inserts to install, the manual process is fine. However, if you are installing these Keenserts by the thousands, then you will want to use a pneumatic power tool to speed up the processes.

How to Install Keenserts with a Pneumatic Tool

  • The beginning of the installation process is the same as a manual installation.
  • Drill and Countersink the Material
  • Tap the Material
  • Manually Insert the Key Locking Insert
  • The next step is to use the power tool to simply screw the key into place.

You can see how this process can save you so much valuable time if you are installing the key locking inserts by the thousands!

Keensert Installation Tool Kit

We offer the pneumatic power tool you need to quickly assemble your key locking inserts! Check them out here.

Learn More About MF Supply

MF Supply is your go-to for all of your hardware and safety needs! Continue to browse our website and contact us today if you would like to learn more!


How to Manually Install Key Locking Inserts

What is a Keensert?

A Keensert or key locking insert is a solid bushing style insert that is threaded on both the inside and the outside and has wedges or “keys” attached at the top. These inserts are used to distribute loads and repair or strengthen threads against failures due to stripping, seizing or corrosion. They are commonly used in precision manufacturing and aerospace applications.

Check out our Buyer’s Guide to Keenserts!

What is the Best Way to Install Keenserts?

There are a few methods used to install key locking inserts. Manual installation is best for assemblies that are in the hundreds, but if you are installing a lot of Keenserts, pneumatic installation is the way to go.

Keensert Manual Installation

  1. Drill and Countersink the Material
  2. Tap the Material
  3. Manually Insert the Key Locking Insert
  4. Use the Installation Tool to Drive the Keensert

Here is the full installation clip from the video.

Stay Tuned and Learn More

If you are interested in learning more about our hardware, check out our other blogs and browse our products online. If you would like to learn how to install Keenserts with pneumatic tools, stay tuned for next week’s blog!


Hardware Functional Equivalents and Sourcing Experts

At MF Supply, we spent 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.

Just like in the pharmaceutical world, where there are brand names that everyone knows, there are also generic brands that are functional equivalents. This is true for the hardware industry too!

What is a Functional Equivalent?

Some brand-name fasteners are also available as functional equivalents, also referred to as crossed, generics, or alternatives. These are parts that are the same in form, fit, function, material, and specifications as the brand name.

Functional Equivalents Examples and Case Studies

Below are two case studies showing how using functional equivalents has saved a lot of manufacturers a lot of money and time.

Case Study: Precision Shoulder Screw Functional Equivalent

In this case study, you can learn more about precision shoulder screw functional equivalents.

Case Study: Keensert Functional Equivalents

In this case study, you can see that smart manufacturers use brand equivalents to save time and money!

Should You Use Functional Equivalents?

On our website, we offer some of our different product reference charts that actually show you the different part numbers that all our functional equivalents.
Check it out here!

Four Point Check Checklist

  • Check your BOM- Does it call for an OEM brand?
  • Are the Lead Times going to hinder your timeline? Will having the part sooner improve the delivery of your final product.
  • Will your supplier provide you with the certificate of conformance to certify that the part is a functional equivalent to the original brand you are looking for?
  • Will saving money help you be more competitive in your market?

Learn More About MF Supply

If you are interested in learning more about saving time and money with functional equivalents, contact us at MF Supply today!


Metric Keenserts

What is a Keensert?

A keensert is a small, bushing style insert that is threading on the inside and outside, with external wedges called keys. Keenserts are a piece of hardware used to distribute loads and to strengthen or repair threads against failure due to stripping, seizing, or corrosion. They are often used in high vibration environments such as instrument panels on airplanes.

Metric Keensert Style

Metric keenserts come in a variety of styles, each with many sizes and materials.

  • Miniature Keenserts
  • Thinwall Keenserts
  • Heavy Duty Keenserts
  • Solid Keenserts

Keensert Cross-Reference

KeensertĀ® Cross-Reference – 4140 Alloy, A286, & Mil-Spec
KeensertĀ® Cross-Reference – Stainless Steel

Quantities of Keenserts from MF Supply

We sell our keenserts in orders as small as 5 pieces all the way 2,500 or more. The more you buy, the more you save!

Learn More About Hardware with MF Supply

MF Supply is your one-stop-shop for all of your hardware needs! Contact us today if you have any questions about our keenserts!


Who is MF Supply?

MF Supply is your go-to partner for all of your fastener, precision hardware, and safety/ PPE needs! We have been supplying many businesses, industries, and government agencies with our quality products for over 50 years.

MF Supply Certifications

11 years ago, MF Supply became a women-owned business and has since been certified as a Women’s Business Enterprise (WBE)! We also hold many other certifications and are registered in SAM, The System for Award Management. What this means for our customers is that we meet the needs of businesses who are looking to buy from and work with smaller women-owned businesses.

MF Supply Products

We have two divisions of products here at MF Supply- Hardware and Safety!

Fasteners and Precision Hardware

Many of our customers are manufacturers, and we supply them with the high-quality fasteners and precision hardware they need to meet specifications for their machines, equipment, and instruments.

Safety and Personal Protection Division

We also supply our customers with a wide variety of safety and personal protection equipment.

What Industries Does MF Supply Serve?

We have a very diverse customer base ranging from manufacturing, with a niche in aerospace engineering, to government agencies, municipalities, health care facilities and many more.

Where Does MF Supply Ship?

Our main office is based in New Jersey, but we also have locations and distribution centers across the country. As such, we have customers all over the world from the United States and Canada to Puerto Rico, Japan, Malaysia, and Europe.

Learn More About the Right Screw for You and Safety Too

If you are looking for high-quality hardware, fasteners, safety equipment, and personal protection equipment, MF Supply is here for you! Contact us today to learn more and check out our online store to browse our inventory.