Permanent security fastener. The hexagon part shears off when tightened with a spanner or socket leaving a plain dome which cannot be removed.
Technical Information
M8 metric course thread.
Finish: Hop dip galvanised
Spanner/socket size: 17mm
We will be closed from 4pm, 2nd April 2026 and will reopen 8am, 7th April 2026.
Permanent security fastener. The hexagon part shears off when tightened with a spanner or socket leaving a plain dome which cannot be removed.
Technical Information
M8 metric course thread.
Finish: Hop dip galvanised
Spanner/socket size: 17mm