The only nut that can be tightened and untightened with a very special socket.
Through the special design, the SecuFast® Seclock screw can't be untightened with any other tool.
Delivery available from M3 till M20 in steel or stainless steel A2 and A4.
Also available as a bolt from M3 till M20 in all sorts of lenghts.

Snake Eye screw (special) with bit

Torx® security screw with bit

Cinstar®

A part of the SecuFast® warehouse, total surface of 650 square meter.

The armour ring principle

The shearnut principle

Torx® security

Application shearnut and hexpin traffic sign clamp

Application in prison

The lock on the door is mounted with pinplug screw

Pinplug for more safety

Torx® is a registered trademark of Textron Inc..