Drywall Screw

A drywall screw is a self tapping screw with a bugle head. It fixes plasterboard to timber or metal studs.

A drywall screw fixes plasterboard to timber or light metal framing. It is driven with a cross recess bit and the head sits flush with the board. A coarse thread form suits soft timber, and a fine thread form suits thin metal studs.

Zinc plating is a coating that gives mild corrosion protection for indoor use. An anti corrosion coating can be added for damp rooms. These finishes are not the same as hot dip galvanising.

This kind of screw is often made in stainless steel 304. Grade 304 gives good corrosion resistance in wet or humid areas. It is also common in carbon steel with a zinc finish.

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 with the material grade and finish. On receipt, check the head shape, thread form and coating for bare patches. Drive a few screws to check they bite and do not snap.