Machine Screw

A machine screw is a small threaded fastener with a head, used to hold metal parts, panels, and assemblies. It usually comes with a slotted, Phillips, or hex head.

A machine screw fastens metal parts, brackets and assemblies into a tapped hole or through a hole with a nut. It usually takes a washer and a nut of the same thread, and it is driven with a screwdriver or a spanner.

Galvanising is a zinc coating that helps resist rust in indoor and sheltered outdoor use. It is not the same as hot-dip galvanising, which gives a thicker coating.

Machine screws are often made in steel, stainless steel, iron, copper, or aluminium. Stainless steel suits damp places, while steel is common for general use.

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 to confirm the material and dimensions. On receipt, check the thread, the head shape, and the coating for damage.