Hex Nut

A hex nut is a threaded fastener with a hexagonal shape. It is used with a bolt or screw to clamp parts together.

A hex nut threads onto a bolt or screw of the same thread and class to clamp parts together. It often takes a washer under it to spread the load. A spanner or socket of the matching size tightens it.

Zinc plating gives a bright finish and mild corrosion resistance. Hot dip galvanising gives a thicker coating for outdoor use. Black oxide gives a dark finish with light oil protection.

This kind of nut is often made in steel, stainless steel, brass, or nylon. Steel grades are common for general use. Stainless steel grades resist corrosion.

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 if you need traceability. Check the thread, across flats, and height against your requirement. Inspect for cracks, thread damage, or coating defects on receipt.