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Shear Bolt Anchor Dome Head

Dome head shear bolt security anchors

The vandal proof shear bolt security ground anchor offers one of the best 1-way permanent security solutions available on the market. Also referred to as snap-off nut anchors, break away nut anchors, breakaway head anchors, shear bolt anchors, security snap off anchors or perma bolt anchors.

  • Permanent security anchor, ideal where maintenance is not required
  • Installed with standard spanner or socket
  • Hexagonal nut snaps off, leaving a smooth, tamper resistant cone
  • Typically used in prisons, banks, construction and public environments

Security Ground Anchor – Dome Head Shear Bolt Security Anchor (Sleeve Type)

Domed shear bolt security ground anchors have a conical shaped head with a hexagonal nut at the top. When the hexagon nut section is fully tightened with a standard spanner or socket until the pressure applied surpasses the maximum torque limit, the hexagonal part snaps off, leaving a plain tamper resistant cone shape.

The security drive design, makes it suitable for higher security applications and it is a 1-way permanent fixing making it the ideal security ground anchor for applications where maintenance is not required, e.g. perimeter fencing, railings, security windows and door frames.

Domed shear bolt security ground anchors are available from stock in stainless steel, M8 x 60, M8 x 75 & M8 x 100 (see technical information tab) with other sizes and materials available to order.

SIZE (DxL) Hole Size (D1) Min Hole Depth (H/D MIN) Max Fixture Thickness (F/T MAX) Spanner Size (SP) Recommended Torque
M8 X 60 10MM 55MM 6MM 15MM 19 N/M
M8 X 75 10MM 55MM 25MM 15MM 19 N/M
M8 X 100 10MM 60MM 45MM 15MM 19 N/M

*For guidance purposes only

Dome shear bolt anchor dim technical drawing

SIZE (DxL) Hole Size (D1) Min Hole Depth (H/D MIN) Max Fixture Thickness (F/T MAX) Spanner Size (SP) Recommended Torque
M8 X 60 10MM 55MM 6MM 15MM 19 N/M
M8 X 75 10MM 55MM 25MM 15MM 19 N/M
M8 X 100 10MM 60MM 45MM 15MM 19 N/M

*For guidance purposes only

Click here to see other types of security anchor. 

Shear Bolt Anchor with Dome Head