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Clutch Head Round Security Self Drilling Screws

Tamper proof clutch head security self drilling screws for protection against vandals and thieves.

A permanent, tamper-resistant fixing with a drill-bit point, eliminating the need to drill a pilot hole.

  • One way permanent fixing
  • An economic secure solution
  • Medium security resistance
  • Permanent 1-way drive
  • Usable for medium torque application

Tamper Resistant Clutch Drive One Way Permanent Security Self Drilling Screw – Round Head Stainless Steel

Gauge / Length (mm) 3/4″ (19)
No.10 (4.8mm)


Vandal Resistant 1 Way Security Screw With Slotted Drive
Tamper proof – Permanent Security Fixing
Requires Standard Slotted Screwdriver

Tamper Resistant Round Clutch Head Security Self Drilling Screws

Tamper resistant Clutch Head security self tapping screws are available off the shelf in stainless steel with other materials and sizes available to order.

The Clutch Head Security Screw has a unique head that requires only a standard slotted screwdriver for insertion, making this the ideal security screw for one way permanent applications.

Due to the design of the vandal resistant Clutch Head Security Screw it is suitable for medium torque applications and is1 way – 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, so when turned anticlockwise the tool simply slips out.
The clutch head security screw is most commonly seen in public areas such as commercial toilet facilities, where maintenance is not required but security is essential to prevent vandals tampering.

Tamper resistant Clutch Drive security screws offer a medium and one way permanent security resistance against vandals and thieves at a relatively low cost , proving an economic and secure equilibrium. Within the industry Clutch Head security screws are also referred to by other names including Clutch Drive, One Way Screws, One Way Round Screws, Perma Screws.

For more information and technical data regarding tamper resistant Clutch Head security products please call our sales team.

Note: Special Clutch Head Security Screws can be made to order including small volume manufacture, modifications and custom parts to drawings.

*Special removal tools are available but are only recommended for use with stainless steel clutch head screws.  Fastenright Ltd only supplies removal tools to account customers that have bought the corresponding screws from our company.  We will refuse to sell removal tools to non-account customers.

Clutch Head pan self drill screw technical drawing

DK (mm) K (mm)
8.9 1.75

*For guidance purposes only

Clutch One Way Round Self Drilling Security Screw