Security Machine Screws - Resistorx Countersunk

About our Countersunk Security Machine Screws

Torx drives feature a six-pointed star-shaped (giving them the alternate name of Star drives) recess with rounded points on the star while Countersunk bolts are used when a flush finish is required, with no part of the screw head protruding above the level of the item being secured.


Like the Pozidrive, the main reason for the development of torx drive was the ability to impart increased torque loads on the head without the fear of the tool slipping. Another beneficial feature of the torx drive is that less effort is required by the operator, as the transfer of torque is more efficient. Torx drive recesses are commonly used in the automotive industry for this reason.


Our Countersunk Security Machine Screws all have a pin located in the middle of the drive to prevent removal with standard tools, making them excellent tamper-proof screws. We stock a choice of Pin Hexagon or Pin Resistorx 6 lobe drive, and both are available in a stainless-steel finish.

Why use Security Screws?

Security Screws are machine bolts that are generally used to deter removal (often for safety purposes) or to prevent theft. They are commonly found in public conveniences, schools, prisons; on cars, boats, public transport; and in electrical items.

We stock a Security Bit Set that covers all the popular Security Screw head types.

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7 Items

Code Product Name Info Pack Size Price Qty
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA203006 M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£8.48 £10.18
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA203006
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£8.48 £10.18
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA203008 M3 x 8mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£10.51 £12.61
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA203008
M3 x 8mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£10.51 £12.61
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA203020 M3 x 20mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£10.31 £12.37
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA203020
M3 x 20mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£10.31 £12.37
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA204010 M4 x 10mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£10.11 £12.13
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA204010
M4 x 10mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£10.11 £12.13
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA204012 M4 x 12mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£6.26 £7.51
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA204012
M4 x 12mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£6.26 £7.51
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA204020 M4 x 20mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£10.70 £12.84
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA204020
M4 x 20mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£10.70 £12.84
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA206040 M6 x 40mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£27.56 £33.07
M3 x 6mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100 CHRTMCA206040
M6 x 40mm - Security Machine Screw Resistorx Countersunk - A2 Stainless Steel - Pack of 100
100
£27.56 £33.07
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7 Items