Armour Ring - Steel Zinc Plated

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. 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. These have been approved by the Home Office.