How to Set Up a Nut and Bolt Manufacturing Unit: Machinery Guide

Two Routes Into Fasteners

Cold forming with headers and rollers suits high volume and standard sizes, but demands big capital and faces brutal competition on commodity items. Hot forging on a screw press suits larger diameters from M20 up, high-tensile grades, and specials in small to mid batches — where smaller units can actually earn margin, because large cold-forming plants will not touch short runs.

The Minimum Viable Hot-Forging Line

Billet shear or saw, heating by induction or oil furnace, friction screw press, trimming press, threading by rolling or cutting, and heat treatment — often outsourced initially.

Where the Margin Is

Specials and high-tensile grades, not commodity M8 bolts. Size the press to flash-line projected area of your largest planned forging, with headroom for the work you want next year.

Starting a fastener unit? Get a complete startup line proposal from Birson Forgings.