■Summary
This is a locking type tangless insert. Locking type inserts are colored red to distinguish them from free type (regular) inserts. Locking type inserts have a series of straight, polygonal Locking coils.
When a bolt (screw) passes through this coil, these straight parts bend outward, creating a repulsive force in the bolt that tries to return, continuously tightening the bolt. This tightening force is controlled by manufacturing to ensure that a constant force is applied in terms of torque.
The lock type insert is an insert that provides a reliable tightening effect on the female thread side, and eliminates the need for a locking mechanism with other parts on the male thread side. Therefore, it is an insert that can contribute to cost reduction and smart product design.
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