Collection: Key Locking Inserts – Inch – Heavy Duty

Our inch-based heavy duty key locking inserts are built for tough jobs. With a thick-wall design and enhanced shear engagement, they deliver maximum strength in threaded repair and reinforcement. These inserts are suitable for applications involving frequent vibration or torque stress. Standard sizes include 8-32, 10-32,1/4-20, 5/16-18, and beyond to 1-12 and 1-8, in carbon or stainless steel.