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Clutch Head Security Screws

Clutch Head One Way Security Screws are cleverly designed to provide a permanent fixing.

Available in wing (Standard Clutch Head Security Screws) and pozidrive (Sentinel Security Screws) style formats, these anti tamper screws are installed using a standard cross head or flat blade screwdriver (as appropriate), the screws operate in a clockwise direction only.

"Clutch Head" and "Sentinel" One Way Security Screws provide a permanent fixing yet can be installed using an ordinary screwdriver. In both Clutch Head (slot wing type) and Sentinel (pozidrive type) formats, the head of the screw has a normal drive face and a chamfered rear face which prevents the screwdriver gaining any purchase when trying to undo the screws. Once installed therefore these screws will typically have to be drilled out to remove them.


Please Note:

if you need a size or style of Clutch Head Screw not among the most popular sizes shown on our E-Shop, call us to place your order.

All stock sizes are available for next day delivery, so simply call us before 3pm on any normal working day and your screws can be delivered next working day; tel: 01273 475500

See below for a full list of stock sizes:


Clutch Head / Slot Head One Way Security Screws - Stock Sizes;


clutch head stock bzp woodscrew csunk

clutch head stock a2 self tapper csunk

clutch head stock a2 self tapper round head

clutch head stock a2 machine screws round head


Removal Tool (not suitable for BZP screws);

clutch head screw removal tool


clutch head screw applications


Sentinel Posidrive Type Clutch Head Screws

sentinel woodscrew sizes


sentinel machine screw sizes csunk


sentinel machine screw sizes button head


Sentinel - Technical Specifications;


sentinel technical



sentinel applications




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