Self-Drilling and Tapping Screws

A self-tapping screw is a screw which can tap its own hole as it is driven into the material.

Common features are the screw thread covering the whole length of the screw from tip to head and a pronounced thread hard enough for the intended substrate, often case-hardened.

Some self-tapping screws are also self-drilling, which means that, in addition to the tap-like flute in the leading threads, there is also a preliminary drill-like fluted tip that looks much like the tip of a centre drill. These screws combine a drilling action and the fastener installation itself into only one driving motion (instead of separate drilling, tapping, and installing motions); they are thus very efficient in a variety of hard-substrate applications, from assembly lines to roofing.

Download SELF-DRILL Screws Technical Guide

We have an extensive range of self tapping and drilling screws and wood screws suitable for many situations.

The various types include slotted self tapping screw, Phillips self tapping pan/csk, chip board screws, hex head self tapping, self-drilling roofing/cladding screws hex, coach screws and drywall screws (gypboard screws).


Self-Tapping Screws are also known as sheet metal screws and are extensively used in sheet metal assemblies.

Go to the Self-Tapping Screws page


Head Styles

Slotted PAN – DIN 7971


Slotted CSK – DIN 7972




Hex Head – DIN 7976



Phillips PAN – DIN 7981



Phillips CSK – DIN 7982




TORX PAN – ISO 14585





TORX CSK – ISO 14586



Security Pin-TORX BH




Security Pin-TORX CSK



Security Pin-HEX BH




Security Pin-HEX CSK



Self-Drilling Screws

Various Head Styles and types are available in different materials for use in a number of applications.

Go to the Self-Drilling Screws page


Hex Head with Flange



PAN head with Phillips drive



CSK head with Phillips drive



Wafer head with Phillips drive


Materials – Carbon Steel with tempered threads and drill point.

Stainless Steel AISI-304 for corrosion resistance.

Stainless Steel AISI-316 [Marine Grade] for harsher environments and coastal applications.

Bi-Metal Screws with Stainless Steel body for Corrosion resistance and ability to drill into steel with a carbon steel hardened drill point.