Permanent

TWIST Shear Bolts

TWIST shear bolts are permanent, high-strength security fasteners characterized by a hexagonal drive segment engineered to fracture at a specific torque threshold during installation. Upon shearing, the fastener leaves a smooth, un-grippable button or countersunk head, rendering it permanently installed and highly resistant to tampering. Fabricated from high-grade alloy or stainless steel, these bolts offer robust tensile strength and enduring corrosion resistance for critical joints. They are strictly utilized in high-security environments, including aerospace structural assemblies, sensitive government installations, and public infrastructure to thwart unauthorized component removal.