The ultimate high security patented one-way nut.

This patented permanent nut requires a matching driver socket for installation giving you guaranteed torque levels and can be re-torqued if required. Not governed by a shear point and leaving no unplated surfaces, it leaves a clean smart finish.

Available in:
Case Hardened Steel Zinc Plated (CR-3)
Case Hardened Steel Geomet® Plated
A2 Stainless Steel

Kinmar® Permanent drive is also in bolt form M8 x 25mm / M8 x 40mm

Other materials and finishes available to order subject to minimum order quantities

Hafren Fasteners are specialists in security fastenings. Established for over 20 years, they are proudly known worldwide as the experts in their industry.

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Available from Brighton Tools & Fixings:
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