Helicoil Compatible V-Coil 4 mm SCREW LOCKING Inserts M4 x 0.7 1.5 D 20 off
£4.95
V-Coil 4 mm Wire Thread Repair Screw Locking Inserts for M4 x 0.7 1.5 D 20 off. This is achieved by the action of one or more polygonal grip coils positioned within the inserts length, which excert radial pressure on the male thread.
