Hexagon shear bolt

Cold heading process is one of the new processes for pressure machining of less or no cutting
metal. It is a processing method that utilizes the plastic deformation of metal under the action of
external forces, and with the aid of molds, redistributes and transfers the volume of metal to form
the required parts or blanks. The cold heading process is most suitable for producing standard
fasteners such as bolts, screws, nuts, rivets, and pins.etc

Hexagonal Shear Bolts – Description & Functionality

Hexagonal shear bolts are specialized fasteners designed for tamper-resistant and security-critical applications. They feature a unique breakaway design that prevents unauthorized removal once installed.

Key Features

1. Hexagonal Head Design

   • Standard 6-sided head for easy installation using a wrench or socket.

   • Made to shear off at a predetermined torque, leaving no gripping surface.

   • Hexagon shear bolt

2. Shear Mechanism

   • The head is engineered to break away once the bolt reaches its specified tightening torque.

   • After shearing, only a smooth, cylindrical shank remains, making removal difficult without specialized tools.

3. Threaded Shank & Tail

   • The protruding tail (excess length) may be cut flush for safety and aesthetics.

4. Material & Hardness

   • Typically made from hardened steel (grade 8.8, 10.9, or stainless steel).

   • Resists drilling, cutting, and tampering.

5. Security Benefits

   • Tamper-proof: No exposed head after installation.

   • Vandal-resistant: Difficult to remove without destructive methods.

   • Controlled installation: Ensures proper clamping force.

How Hexagonal Shear Bolts Work

1. Installation

   • Inserted into a pre-drilled hole and tightened with a wrench.

   • At the precise torque, the hexagonal head snaps off.

2. Removal (If Required)

   • Requires special extraction tools (e.g., left-hand drill bits, bolt extractors).

   • Often necessitates drilling or grinding.

   • Hexagon shear bolt

Common Applications

• Traffic & infrastructure: Street signs, traffic lights, railway tracks.

• Public utilities: Electrical enclosures, meter boxes.

• Security systems: Bollards, fencing, access panels.

• Heavy machinery & automotive: Critical assemblies requiring tamper resistance.