Hex Head Wood Screw

A hex head wood screw is a large wood screw with a hexagonal head. It fastens timber to timber or timber to a base material.

A hex head wood screw joins timber parts and pulls them together. It often takes no nut, because it cuts its own path into the wood. A plain washer can sit under the head to spread the load on softer timber.

Hex head wood screws are often made in steel or stainless steel. Stainless steel suits damp or coastal sites, while steel is common for general building work.

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

Ask for a mill test certificate or a certificate of conformance. Check the head size, thread pitch and that the screws are straight and free from damage on receipt.