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Security Armour Rings

Tamper Resistant Security Armour Rings

Security Armour Rings are a unique security nut with a simple, but effective design. Hosting a conical collar, the nut is hammered over any British or DIN Standard hexagon bolt or hexagon nut, rendering the fixing tamperproof.

The armour rings are not governed by torque and are applied to existing nut or belt heads by simply hammering them on, which leaves a smooth finish with no sharp edges. They are ideal to be placed on maintenance-free applications.

Security Rings can be installed using a standard hammer, but there are special tools available for faster and easier installation.

Security Armour Rings are manufactured and stocked in stainless steel or steel zinc plate with other sizes and materials available to order.

Available M6 to M20 as standard.

Armour ring technical drawing

M6 M8 M10 M12 M16 M20
A (mm) 15.8 20.0 26.6 33.0 41.2 51.0
B (mm) 10.9 14.2 18.6 20.8 26.7 33.5
C (mm) 7.2 10.5 12.0 13.5 17.3 19.0
D (mm) 6.8 7.7 9.8 12.3 16.0 19.0
Material M6 M8 M10 M12 M16 M20
BZP marker-image marker-image marker-image marker-image marker-image marker-image
A2 ST/ST marker-image marker-image marker-image marker-image marker-image marker-image

How to apply security armour rings

Armour Ring