BaerCoil® Wire Thread Inserts - Type: "screw grip" (screw locking)

Performance BaerCoil „screw grip“ insert has one or more of its intermediate coils deformed polygonally. This serves to create strong resilient pressure onto the thread flanks of the bolt as it passes throught. This built in Prevailing Torque of the grip coil positively locks the bolt safeguarding against loosening unter vibration or impact. Bolts can be inserted by hand up to the grip coil, after which some mechanical means, spanner or wrench, must be employed to overcome the prevailing torque. To obtain the best performance from BaerCoil “screw grip“ inserts it is recommended that only good quality close limit fit, rolled thread, oil lubricated bolts are used. Under no circumstances should 'black' (heat treatment scale) bolts be used.

Color Identification BaerCoil “screw grip“ are normally colored red for identification purposes only, to distinguish them from “free running“ inserts. This color has no other function such as lubricity.