Permanent

TWIST Shear Nuts

TWIST shear nuts are high-security, breakaway fasteners consisting of a threaded conical or dome-shaped base integrated with a hexagonal drive head. During installation with standard tooling, the hexagonal head shears off precisely when a predetermined torque threshold is reached, leaving a smooth, tamper-proof profile lacking gripping surfaces. This permanent, fit-and-forget mechanism ensures uniform clamping force and prevents unauthorized disassembly. Commonly forged from high-strength galvanized or stainless steel, they are heavily utilized in securing palisade fencing, public infrastructure, and solar panel arrays.