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Round Clutch Head Security Machine Screws.

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Round Clutch Head Security Machine Screws

What are Round Clutch Head Security Machine Screws?

Designed for commercial use, this type of anti theft screw features a Clutch Head which helps to secure objects from tampering and prevent them from being easily opened or removed.

The Clutch drive of these security screws features a special ridged design which allows for the screw to only be turned in a clockwise direction, meaning this security screws removal is very difficult without an appropriate removal tool. As a result, this type of tamper proof screw is designed to be a 1-way permanent fixing solution, making it a high security fastener.

These Clutch Head Security Screws feature a machine screw thread, making them suitable for use in tapped holes, or in conjunction with female threaded components such as Hexagon Nuts. The Clutch Head is round in shape, similar to a Button Head Screw, meaning it is free from sharp or pointed edges and is aesthetically pleasing. This also results in increased safety, complimenting these security screws being used in public sector installations.

Installing Clutch Round Head Screws only requires a Slotted Screwdriver, also referred to as a Flat Head Screwdriver, making them simple to fasten manually. However, it’s worth noting that this type of tamper proof screw is designed to be a permanent fixing. To uninstall this component, a security screw removal tool is required.

For applications where the security screw needs to be adjustable or removed from time to time, Accu also supplies Two Way Security Screws, such as 5 Lobe Pin Security Button Machine Screws.

For a variant with a Self Tapping Screw thread, suitable for use in pre-drilled holes to create its own thread as it is fastened, please see our range of Clutch Round Head Security Self Tapping Screws.


Clutch Head Screws in this range are made from A2 Stainless Steel (304), suitable for applications where corrosion resistance must be considered. This Security Machine Screw is also available with a pre-applied thread locking patch for anti-vibration installations or with a Chemical Black finish.


Accu’s range of Clutch Round Head Security Screws are listed in thread sizes M3 to M8, with lengths ranging from 8mm to 60mm.

Bespoke Round Clutch Head Security Machine Screws Manufacture.

High precision, bespoke manufacture of Round Clutch Head Security Machine Screws to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.

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