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