Understanding Different Types of Fasteners in CNC Machining(medical plastic molding Enoch)

  • Time:
  • Click:305
  • source:AVELLINO CNC Machining


CNC machining plays a crucial role in various industries, enabling the production of complex and precise components. One vital aspect of CNC machining is fasteners. Fasteners hold different parts together firmly, ensuring stability and functionality. In this article, we will delve into the types of fasteners commonly used in CNC machining and their significance.

1. Bolts:

Bolts are one of the most common types of fasteners in CNC machining. They consist of a threaded cylindrical body with a head at one end. The threads allow for easy insertion into matching nuts or pre-threaded holes. Bolts are available in various sizes, grades, and materials to suit specific applications. Common variations include hex bolts, carriage bolts, shoulder bolts, and flange bolts.

2. Nuts:

Nuts complement bolts by providing the necessary grip and tension. These small, usually hexagonal-shaped devices have an internally threaded hole that mates with external bolt threads. Just like bolts, nuts come in different forms such as regular hex nuts, locknuts, wing nuts, and jam nuts. Choosing the right nut is essential for maintaining secure connections between components in CNC machining.

3. Screws:

Screws differ from bolts in that they typically do not require a separate nut. Instead, screws create their own internal threads within the material being fastened. They generally feature finer threads and come in diverse styles such as wood screws, machine screws, self-tapping screws, and sheet metal screws. Specialized screws can also have unique drive heads like Phillips, slotted, Torx, or Allen (hex) heads.

4. Washers:

Washers act as spacers or load distributors between fasteners and the materials being joined. They help prevent damage caused by excessive pressure on fragile components. Flat washers, spring washers, and lock washers are among the most commonly used types. Flat washers offer a smooth surface area while ensuring a more even distribution of load forces. Spring washers provide elastic tension, maintaining bolt torque and preventing loosening due to vibrations. Lock washers prevent rotation or unscrewing of fasteners.

5. Rivets:

Rivets are widely used in CNC machining for permanently joining two or more components together. They consist of a cylindrical shaft with a head on one end. When inserted through pre-drilled holes, the rivet's unheaded end is deformed using specialized tools, creating a second head that secures the joint tightly. Rivets can be made from materials like steel, aluminum, copper, or brass, depending on the application requirements.

6. Clips and Clamps:

Clips and clamps provide temporary or semi-permanent fastening solutions in CNC machining. These fasteners come in various shapes and sizes. U-shaped staples, retaining rings, hose clamps, and spring clips are some common examples. Clips and clamps allow for quick assembly or disassembly without the need for additional tools, making them convenient for maintenance purposes.


Fasteners are essential components within CNC machining, holding structures together securely. Understanding the different types available and their specific functions helps ensure efficient and reliable operations. By selecting the appropriate fastener type, size, grade, and material for each application, manufacturers can optimize their CNC machining processes and produce top-quality products. Whether it's bolts, nuts, screws, washers, rivets, or clips and clamps, these key elements play a significant role in maintaining the structural integrity and functionality of diverse assemblies. CNC Milling