Nylon Washer

A nylon washer is a flat plastic ring that sits under a screw head or nut. It spreads the load and separates the parts, and it insulates where metal contact is unwanted.

A nylon washer sits under a nut or screw head to spread load and protect the surface. It can also insulate or reduce friction. It takes a screw or bolt of the matching size.

This washer is often made in PE 66, a nylon grade. Nylon gives low friction, good wear resistance and electrical insulation, and it handles damp well. It can absorb moisture and swell, so allow for that in close fits.

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 and check the inner and outer diameters and the thickness against the drawing. On receipt, look for warping, burrs and colour variation between batches.