The round bar raw material is then selected as per the size, followed by cutting it for the required length. This process is followed in all bolt, nut, and stud manufacturing processes. The hot forging process is applied for bolt and nut manufacturing.
Cold forging - Molding the steel into the right shape at room temperature. Bolt head - Progressively formed by forcing the steel into various dies at high pressure. Threading - Threads are formed by rolling or cutting. Heat treatment - The bolt is exposed to extreme heat to harden steel.