Exploring Different Types of Fasteners in CNC Machining--cncmass.com(cmm machine Novia)

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CNC machining is an advanced manufacturing process that involves the use of computer-controlled machines to produce precise and complex parts or products. One crucial aspect of CNC machining is fastening, which plays a vital role in securing components together during the production process. In this article, we will delve into the different types of fasteners commonly used in CNC machining.

1. Screws:

Screws are one of the most frequently used fasteners in CNC machining. They come in various sizes, types, and materials to accommodate different applications. Some popular screw variations include machine screws, set screws, self-tapping screws, and wood screws. These tiny yet essential components act as threaded fasteners because their helical ridges provide grip, enabling them to be tightened securely for holding parts together.

2. Bolts:

Similar to screws, bolts are widely utilized fasteners in CNC machining. Unlike screws, bolts require nuts to create a secure joint. Common bolt designs encompass hex bolts, carriage bolts, eye bolts, and anchor bolts. Their sturdy construction ensures robust connections between components, enhancing the overall structural integrity of the final product.

3. Nuts:

Nuts are indispensable when it comes to fastening using bolts. Designed with internal threading, nuts are usually hexagonal in shape but can vary depending on specific application requirements. Hex nuts are relatively simple and commonly used in CNC machining due to their ease of installation and tightening capabilities. Other nut variants include wing nuts, lock nuts, cap nuts, and square nuts, catering to diverse fastening needs.

4. Washers:

While washers may seem inconspicuous, they play a significant role in CNC machining. Acting as a flat spacer, washers distribute the load evenly over a larger area, preventing damage to the surface being clamped or fastened. These thin disks feature holes at the center, allowing screws or bolts to pass through them. Washers are available in various materials, such as stainless steel, nylon, and rubber, contributing to enhanced stability and corrosion resistance.

5. Rivets:

Rivets are permanent fasteners frequently used in CNC machining applications where welding or screwing might not be feasible. Typically, a rivet consists of a cylindrical body with a mandrel passing through it. During installation, the mandrel is deformed, creating a clamping force that holds the components together securely. This process ensures a neat finish on surfaces without any visible threading, making rivets an excellent choice for aesthetics.

6. Clips and Clamps:

Clips and clamps serve as temporary fasteners during CNC machining operations. These handy devices provide quick and easy attachment methods, enabling efficient assembly and disassembly. Spring clips, hose clamps, and C-clamps are commonly employed in CNC machining processes, ensuring parts remain firmly held in place until final-fastening alternatives are implemented.


In CNC machining, choosing the right type of fastener is essential to ensure precise, durable, and structurally-sound products. The wide range of fastening options like screws, bolts, nuts, washers, rivets, and various types of clips and clamps provides flexibility to address specific application requirements. Familiarity with these components equips engineers, manufacturers, and designers with the knowledge required to make informed decisions regarding fastening techniques in CNC machining, resulting in high-quality end products. CNC Milling