Here the fasteners are manufactured without heating directly From the available annealed coils on the header machine.
Initially the rivets are formed and then the wole lot of rivets are gathered In a hex trimming machine hopper , whereby the rivets are guided into the Trimming dies via conveyer belt . Once the bolts are trimmed they are threaded On thread rollers & then drum polished . No where heating is required & there fore it is known as cold forged process . The finish of cold forged Quality fasteners is much superior to hot forged quality.