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J C Gupta & Sons

J C Gupta & Sons

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Self-Drilling and Tapping Screws

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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 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.

Also available in Stainless BLACK finish on request.

 

 

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