Collection: Key Locking Inserts

Shop premium key locking inserts designed for thread repair and high-strength reinforcement. These threaded inserts feature mechanical keys that lock them into place, preventing rotation under torque or vibration. Ideal for restoring stripped threads in aluminum, magnesium, and other soft materials.

Our InsertsPro™ key locking inserts are available in carbon steel and stainless steel, and are widely used in aerospace, defense, and heavy machinery industries. Perfect for applications requiring vibration resistance, permanent fixation, and long-lasting performance.

Compatible with other brands such as KEENSERT®, Keysert®, and Acme, our inserts are available in a range of metric and inch sizes with stainless or carbon steel options.