Mono-Drive 12 Kinmar®  Nut - Permanent & Removable

Materials & Finishes

Steel, Zinc & Clear Plated

Steel, Galvanised (available on request)

A2 Stainless Steel, Self Colour

Note: Due to the fact that fastening applications differ greatly, the below information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.

Dimension data




Further information

Key Features


Unique high torque security drive. This patented system is a superior alternative to the Shear Nut, having the advantage of not leaving any unplated surfaces and not being governed by the shear point, enabling an accurate and reliable torque rating to be achieved. This fastener can be re-torqued if required. This is a permanent fixing.


Another unique high torque security drive system which can only be undone with the unique matching socket. This product is extra resilient to attack because of its rounded shape and case hardened steel construction. 

Probably the most cost-effective removable security nut on the market.

TR Security Drivers

Requires matching driver socket

Please note: Most security screws are not manufactured to DIN or ISO standards and head dimensions can vary considerably from manufacturer to manufacturer. If head dimensions are critical, please specify at time of order.  

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