Armour Ring™
A simple conical collar which renders a standard hexagon nut or bolt tamper resistant.
The Armour Ring™ can be applied to any British or DIN standard hexagon nuts or bolts using a standard hammer or Armour Ring™ installation tool. It leaves a smooth clean finish which is often favoured by Health & Safety executives and isn’t governed by a torque level like some one-way fasteners.

Has been Home Office approved.
Available in Steel Zinc Plated (CR-3) and 303 S31 Stainless Steel.

Hafren Security Fastener products currently aren’t held in stock but are available to order. Please contact us at or call 01268 288880 for delivery details.

Need further product information? Click here to download the Hafren Security Fasteners handbook.

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