Manufactured from high quality chromium nickel stainless steel. V-COIL inserts provide high strength internal threads that resist the effects of temperature and corrosion.
Produced from precision profiled austenitic stainless steel wire wound into a helical spiral, V-COIL free running inserts have a spring like appearance.
When installed they provide strong permanent internal threads which resist head and corrosion.
Fitted position is maintained by the action of radial pressure between their coils and the flanks of the tapped hole. This pressure exists because their free diameter is larger, by a calculated amount, than their installed diameter