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 center-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
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
Special Tapping Screws
PT Screws
We have added PT screws – Self-Tapping Screws suitable for both plastics and metal.
With a blunt type F end, these are extremely versatile for small and mini assemblies of a number of different materials.
These are available with different head designs.
The CSK Phillips head offers fixings with a flush and level finish without any projection.
The PAN head screws are very useful for higher clamping loads and available from 1.2mm onwards.
Made from corrosion resistant stainless steel AISI-304 these screws are RoHS compliant.
JCPlas Thread Forming Screws
If your usage is in plastics consider the JCPlas thread forming screws.
Go to the JCPlas Thread Forming screws page
Range starts from 1.6mm onwards.
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.
Also available in Stainless BLACK finish on request.