Nuts Nylock SAE

Nylock Nuts in SAE Sizes

A nylock nut carries a nylon insert that grips the screw threads and resists backing off under the constant vibration of a running engine or motor. This category collects SAE sized nylock nuts in plated alloy for hardware that needs to stay put.

Thread Sizes

The selection runs through the common machine screw threads, from 2-56 and 3-48 up through 4-40, 5-40, 6-32, and 8-32. Keeping a spread of sizes on hand means a matching locking nut is ready whenever a build calls for one, whether on a control horn, a motor mount, or a landing gear block.

Because the nylon insert does the locking, a nylock nut can be removed and reused a limited number of times before the grip wears, which suits assemblies you expect to service now and then rather than a permanent joint.

Browse the nylock nut sizes below to stock the locking hardware your projects use.