Customized Hex Head Nuts With Nylon Washer Insert Plain Finish Tempering / Hardening

A nyloc nut, also referred to as a nylon-insert lock nut, polymer-insert lock nut, or elastic stop nut, is a kind of locknut. It is a nut with a nylon washer insert that resists turning. The nylon insert has many kinds of material and production process.

The plastic insert is placed at the end of the nut, and its inner diameter (ID) is slightly smaller than the diameter of the screw. The insert deforms elastically over the threads of the screw, but threads are not cut into the nylon. The nylon insert locks the nut by friction against the screw under the applied radial compressive force. Nyloc nuts retain their locking ability up to 250 °F (121 °

The first is to use two same nuts on the bolt, attaching nuts a tightening torque between two, so that the bolt connection is reliable.
The second is dedicated locknut, and need a way to lock washer together. Dedicated locknut not hex nuts, but in a round nut, the nut circumference opened a three, four, six or eight notch (depending on the nut size and manufacturer product line varies), which tighten the focus of both a few notches tight tool, but also snaps into place lockwashers bayonet.
The third is on the outer surface of the nut to the inner circumferential surface of the threaded screw holes drilled therethrough (typically two, distributed in the outer-section 90) for screwing the small-diameter countersunk screws, the purpose is to thread applying a radial direction of force to prevent the lock nut loosened. At present quality on the market in a better lock nut inner peripheral surface of the nut encrusted consistent with the lock nut threaded brass pieces, to avoid radial top screws directly contacts the locking threads and damaged By. This rotational movement of the locking nut locking shaft-type parts of the case gradually began to use, such as a ball screw mounting end bearing locking.