2121 Diehl Road, #131 | Aurora, IL 60502


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Phone: 800-321-LOCK (5625)

Fax: 630-236-3210

Email: sales@aztechlocknut.com

Small Hex NM & Machine Screw NTM

Product Description

Nylon insert locknuts are produced by forming and tapping nuts that include a tubular feature on top that receives a nylon ring. The tubular top is crimped to capture and hold the ring from spinning while the mating part self threads into the nylon during assembly. The nylon ring size and crimping process to secure the ring must be controlled to tight tolerances.


NM and NTM locknuts are the common small dimension nylon insert products, with the NTM the thinner variant. As compared to All-Metal Locknuts, Nylon Insert Locknuts are less damaging to mating threads, but have lower heat limitations and over time the nylon develops memory and prevailing torque erodes.

Available Sizes

Nut Type Grade Lock Size Thread Availability

Full Nylon NM A Top #2 - #12 Coarse and Fine, 2B Contact for Current Status

Jam Nylon NTM A Top #2 - #12 Coarse & Fine, 2B Contact for Current Status