Nylon Patch Screw

A nylon patch screw is a threaded fastener with a small patch of nylon applied to the threads. The patch creates friction to resist loosening from vibration.

A nylon patch screw locks itself in place once it is driven home. The patch creates friction that resists loosening from vibration. It suits small assemblies where a separate locking washer is awkward to fit.

This kind of screw is often made in steel or stainless steel. The nylon patch is a plastic insert that grips the threads. The material choice affects corrosion resistance and strength.

This is a general guide to checking this kind of part. It says nothing about any supplier's parts.

Ask for a certificate of conformance to confirm the screw meets the required specification. On receipt, check the patch is present and intact, and that the threads are clean. Verify the dimensions and drive type against the order.