A Shear Bolt is a type of 1-Way Security Screw, intended to provide a permanent fixture once installed. They fasten very similarly to standard Hex Bolts, and can be installed using a regular hex socket driver or a spanner. However the hex head of a Shear Bolt is designed to snap off (or shear) once it reaches a predetermined torque level, leaving a conical shape, similar to a Button Head, with a smooth finish.
The Shear Bolt uses a breakaway hex head that snaps off at a calibrated torque, leaving behind a smooth, ungrippable surface. It's a simple and effective design for creating permanent installations. Once installed, removal typically requires drilling or destructive force. However, the initial install is limited by access to torque tools, and over-tightening or under-tightening can reduce performance.
We compiled these "product facts" using publicly available information, expert analysis, and reasonable assumptions where data was incomplete. Some details (like pricing, torque specs, and break-in times) aren’t always disclosed, so we’ve filled in the gaps as accurately as possible.
For verified specs or specific use-case guidance, we recommend reaching out directly to the manufacturer.
All set to buy the Shear Bolts by Hafren Security Fasteners? No worries, we are here to sort this out for you.
Not Available in stores.
Order online.
We are manufacturers & wholesalers of fasteners... but not just any, fasteners we manufacture and supply security & tamper resistant fasteners; special headed screws, nuts & bolts which are either permanently fixed, or removable only by using a matching driver tool. We stock the widest range of security fasteners available; if we don’t have what you need we’ll make it just the way you want, At Hafren we are able to offer bespoke made to measure security fasteners.