Domestic Nylon Insert Locknuts
Abbott Interfast began producing nylon insert locknuts, also known as Nyloc nuts, in 1964 as the first licensee under U.S. Patent No. 2,450,694 for the Elastic Stop Nut Corporation of America.
Since that time, our domestic manufacturing operations in the United States have produced millions of cold-formed nylon insert locknuts for a wide range of industries and applications.
Our signature yellow nylon inserts, made from DuPont™ Zytel® 101, are a registered trademark and indicate that Abbott Interfast is the original U.S. manufacturer of these domestic locknuts. We are a QPL-approved source for the Military and appear on the QSLD / QSLM listings for MS, AN, NAS, and ANS nylon insert locknut standards.
What is a Nylon Insert Locknut (Nyloc Nut)?
Nylon insert locknuts or nyloc nuts consist of two components, in its simplest form the description would be a hex nut and an insert. Once assembled and held in place, the nylon inserts perform as a locking device using friction, which will not gall, against the mating part for applications where a regular hex nut may come loose from vibration or shock-loading. In addition, the nylon insert provides re-usability. When removed, the nylon relaxes and begins to return to its original shape providing continued use of the locking feature, an advantage over all metal locknuts.
Nylon Insert Locknuts Applications & Standards
Designed for applications with operating temperatures of up to 250°F, nylon insert locknuts are commonly used in automotive, industrial, and defense/military applications where resistance to vibration and shock-loading is critical.
These nylon insert locknuts are ideal for assemblies subject to repeated movement, dynamic loads, and long-term service reliability, where standard hex nuts may loosen over time.
Thin-pattern nylon insert locknuts can be used in applications where space is limited, such as compact mechanical assemblies and lightweight components, provided the application is not heavily loaded.
Our domestically manufactured nylon insert locknuts, produced in the United States, meet all quality requirements of MIL-N-25027 and conform to IFI standards, making them suitable for regulated and mission-critical environments.
Cold-Forming Manufacturing of Nylon Insert Locknuts
Abbott Interfast manufactures nylon insert locknuts using cold-forming manufacturing processes, allowing for precise dimensional control and consistent thread quality.
Cold-forming enhances grain flow and mechanical performance, making these locknuts ideal for high-volume production and demanding applications.
This process also enables cost-effective manufacturing of domestic locknuts while maintaining tight tolerances required by automotive, industrial, and defense programs.
Our Capabilities
Our team proudly produces nylon insert locknuts in a wide range of carbon steel, alloy steel, and stainless steel materials, with domestic cold-forming manufacturing supporting consistent quality across production runs.
Thread sizes range from as small as 0-80 to as large as 2.75-12, accommodating lightweight assemblies through heavy-duty industrial and military applications, and are available in multiple locknut patterns to meet specific dimensional and performance requirements.
Abbott Interfast also offers a variety of additional special service options if needed. This includes everything from custom coatings and finishes such as zinc, cadmium, and specialty military-approved coatings, to custom plating and waxing.
Patterns Available
The following nylon insert locknut patterns are available as cold-formed parts and manufactured as domestic locknuts in the United States to meet specific application, industry, and dimensional requirements:
|
NE |
NTE |
ND |
| NM | NTM |
A27M |
|
NU |
NTU |
WING |
| NKM | NKTM |
1660 |
| NCFMA | N1260 |
MKCFM |
Request a Quote for USA-Made Domestic Nylon Insert Locknuts
Partner with Abbott Interfast for USA-manufactured nylon insert locknuts, produced through cold forming manufacturing to meet automotive, industrial, and defense requirements.
Submit your specifications or prints to receive a fast, accurate quote from a domestic locknut manufacturer with decades of experience.
Nylon Insert Locknut FAQs
Are nylon insert locknuts reusable?
Yes! You can reuse nylon insert locknuts when you remove and reinstall them within design limits.
What temperature limits apply to nylon insert locknuts?
Standard nylon insert locknuts are recommended for applications up to 250°F, beyond which alternative locking solutions may be required.
Can you custom-manufacture nylon insert locknuts?
Yes, Abbott Interfast manufactures custom nylon insert locknuts as cold-formed parts, supporting unique dimensions, materials, coatings, and performance requirements.
Why choose domestic locknuts over imported options?
Domestic locknuts manufactured in the United States offer improved quality control, shorter lead times, and reliable compliance with automotive, industrial, and military standards.