Clutch Head Security Screws

Not every fastener is meant to be removed easily. In applications where tampering, vandalism, or unauthorised access is a risk, a clutch head security screw provides a significant deterrent: it can be driven with a standard flat-bladed screwdriver, but its asymmetric head design prevents removal by the same means. At the DIY Hardware Store, our clutch head security screws are the choice for securing public-facing fixtures, outdoor furniture, and access panels where permanence is the goal.

The clutch head (also called the one-way screw) works because the drive slots are angled so that a screwdriver can engage and turn in the driving direction, but slips out of engagement when turned in the removal direction. This makes removal very difficult without specialist tools, significantly raising the effort required for anyone attempting to tamper with the fitting.

Applications include securing toilet cubicle hardware, public bench slats, outdoor signage, street furniture, and any fixture in a publicly accessible setting where standard screws would be periodically removed.

  • One-way clutch head - drives in but resists removal
  • Significant deterrent against tampering and vandalism
  • Drives with standard flat-bladed screwdriver
  • Ideal for public toilets, outdoor furniture, and street fixtures
  • Zinc-plated steel for corrosion resistance
  • Available in standard countersunk sizes