Nut, Bolts, and Studs are one of the most essential components of any industry. Their production has become advanced with a high-tech process that includes multiple steps and procedures. As one of the stud bolts manufacturers in India, we will take you through a step-by-step process of bolt nut manufacturing.

Overall the manufacturing process of bolts, nuts, and studs is somewhat the same. But as one of the leading stud bolt manufacturers in India, Kant Fasteners has a few unique processes that are followed to manufacture nuts, bolts, and studs.

As we know, Bolts, Nuts, and Studs are important fasteners that are used in a variety of industrial applications, and the successful use of these products depends on their manufacturing processes. Here, we shall discuss the process of bolt nut manufacturing.

The basic process of bolt nut and stud manufacturing is done using materials like stainless steel, carbon steel, brass, aluminum, and plastic. As a nut bolt manufacturer in India, we know every manufacturing process is unique depending on its individual function. So let’s understand the process in detail:

  • Step 1: Raw material inspection & Cutting of raw material
    The raw material is picked based on the application. Like all other stud bolt manufacturers in India, we also choose the material to be used and conduct a chemical and physical inspection of the round bar material. 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.

  • Step 2: Hot-forging process
    The hot forging process is applied for bolt and nut manufacturing. During the forging, the bolt head/nut is deformed by induction heating. Then, calculations are made to determine the required length, recrystallize the metal’s temperature, and bend to the required shape and size.
  • Step 3: Annealing
    In the next step, after forging, the material is annealed for uniformity and eased for machining. All three nut, bolt, and stud manufacturing include this process.
  • Step 4: Cleaning & Trimming
    Surface finishing is the next step in the nut, bolt, and stud manufacturing process. Annealing and cleaning the nuts, bolts, and studs in a shot blasting machine makes the surface smooth and removes any scaling or burr. Next, the access material near the head is removed by trimming/drawing. This process is applicable only for nuts and bolts.
  • Step 5: Turning Process
    The next step of bolt nut manufacturing is the turning process. First, the material is machined to the required dimensions, usually done by a CNC machine. This process is done to remove excess material and maintain a pitch diameter.
  • Step 6: Thread Rolling
    This is a mechanical process where threads are cold-formed and is done with two dies. One is stationary, and the other is a moving die that actually exerts pressure on the bolts and studs. Tapping is done for nut manufacturing in India.
  • Step 7: Heat Treatment
    Heat treatment is done to make the bolts, nuts, and studs stronger. This process involves hardening materials in a gas carburizing furnace at a temperature of 850-900°C and then quenched in the cooling media. All the process is recorded in data loggers.
  • Step 8: Phosphating
    Phosphating is a chemical process of treating the surface. Operations are performed to alter the surface of the bolt, nut, or stud. Soluble metal-phosphate layers are formed on the job, enhancing the function and aesthetic appeal of the product.
  • Step 9: Re-threading
    This simple process of nut bolt manufacturing after the completion of all the procedures.
  • Step 10: Packaging & Dispatch
    After completing all the above steps, the products are sent for testing and inspection. First, they are thoroughly checked for their hardness levels, threading accuracy, strength, etc.; once they pass all these procedures, protective sleeves are inserted while packing to prevent damage to the thread and the packaging.

As a leading stud bolt manufacturer in India, Kant Fasteners strictly follow these steps to deliver quality products to customers at competitive rates.