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Security Pin Torx Reduced Thread Captive Screws

Security Pin Torx Captive Screws are often used for safety reasons, and are required by EU law on a number of pieces of safety equipment.

Designed with a reduced thread, which is an unthreaded portion beneath the head, which stops the screws from being fully removed from their housing. They can be used alongside Captive Washers to create a self-retaining fastener.

The hexalobular drive, also called security Torx, gives the screw tamper-proof properties. Tamper-proof means that they have been developed to prevent or significantly hinder the possibility of interference with the fixture – which with the unthreaded portion makes it incredibly unlikely that the screw will be interfered with. The employment of a tamper-proof drive on a security captive screw is used to ensure that the installer is the only person able to perform maintenance on the fastener.

They are often found in industrial machinery and military applications.

Available as standard in A2 stainless steel, with other materials and finishes available upon request.

Please contact us to further your enquiry.

security captive screws

d1 and L1 dimensions can be to customer specification.

 

Pozi Countersunk Reduced Thread Captive Screws
THREAD M3 M4 M5 M6 M8 M10
dk (mm) 5.5 7.4 9.3 10.4 13.7 17
d1 (mm) 2.2 3 3.8 4.5 6.2 8
L (mm) 12 16 20 25 40 40
L1 (mm) 6 8 10 12 16 20
K (mm) 1.6 2.1 2.7 3.2 4.3 5.8
AVAILABLE SIZES M3 M4 M5 M6 M8 M4
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