Induction Hardening is a process used to harden only the thread forming zone of a tri-lobular fastener that forms a thread in a mating hole as it is assembled.
Specialist machinery for induction hardening of fastener threads and selected zones leaving the core of the heat-treated fastener unaffected is available at Wolverhampton Electro Plating. This gives thread forming screws the ability to retain core toughness, but with hard threads to meet the most punishing applications of thread forming screws.
The specialised zone heat treatment is not exclusive to threads it also provides wear resistant areas particularly with items such as ball studs.
Our range of metal finishes and pre-applied lubricants can be applied to hardened screws to provide in-place corrosion resistance and controlled installation and prevailing torques.
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