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Clutch Head Raised Countersunk Security Screws

Tamper Proof Clutch Head Raised Countersunk Security Screws for the Electrical Trade.

Clutch Head Security Screws have unique heads that require only a standard slotted screwdriver for insertion, making this the ideal security screw for one way permanent applications.

The unique head design of the vandal-resistant Clutch Head Security Screw means it is suitable for medium torque applications and is a one-way screw – or a permanent fixing. The unique drive system has a special chamfer at either side of the slotted drive, enabling the screws to be turned in only one direction, meaning when it is turned anti-clockwise the tool simply slips out.

Most commonly found in public areas where maintenance is not required but security is of the utmost importance to prevent vandals from tampering.

The medium, one way permanent security resistance these screws provide comes at a relatively low cost, providing an economic and secure option.

Also referred to by names such as clutch drive, one way screws, one way round screws and perma screws.

Please contact us with your requirements to further your enquiry.

Thread / Length (mm) 12 20 25 30 40 50 60 70

Clutch Head Raised Countersunk Security Screw Technical Information

Clutch Head raised countersunk technical drawing

DK (mm) K (mm)
M3.5 6.7 2.1

*For guidance purposes only

Clutch One Way Permanent Raised Countersunk Security Screw for the Electrical Trade