Button Head Screw

A button head screw has a low, rounded head with a hex socket drive. It is used where a smooth, low profile head is needed.

A button head screw fastens thin panels and covers where a low, rounded profile is wanted. It often takes a hex key and a nut or a tapped hole of the same thread. It can be used in light assemblies and where the head must sit close to the surface.

This kind of screw is usually made in steel, stainless steel or brass. 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 and check the socket, thread and head dimensions on receipt. A mill test certificate can be requested for the material.