Understanding Types of Fasteners for CNC Machining--cncmass.com(3d printing threads Glenn)

  • Time:
  • Click:4
  • source:DAHLER CNC Machining


CNC machining plays a significant role in the manufacturing industry, providing precision and efficiency in producing various items. From aerospace components to medical devices, automotive parts to custom prototypes, CNC machining offers unparalleled accuracy and consistency. However, one crucial aspect of CNC machining that often goes unnoticed is the usage of fasteners. These small yet essential components enable secure fixing and assembly during the production process. In this article, we will explore different types of fasteners used in CNC machining and their significance.

1. Screws:
Screws are the most commonly used fasteners in CNC machining. They consist of a cylindrical shaft with spiral threads, enabling them to grip materials when driven into them using a screwdriver or other related tools. Different types of screws include machine screws, self-tapping screws, wood screws, and sheet metal screws. The choice of screw type depends on the material being joined and the required strength of the connection.

2. Bolts:
Bolts resemble screws but come with a distinct feature known as a nut. Unlike screws, bolts pass through a hole or pre-threaded insert and then secured using nuts or threaded holes on the opposite side. Bolts offer higher load-bearing capacity compared to screws, making them suitable for applications involving heavy structural work, machinery assembly, or securing two components together with high clamping force.

3. Nuts:
Although not strictly categorized as fasteners themselves, nuts play an integral part in CNC machining when paired with bolts. Nuts are hexagonal or square-shaped components with internally threaded holes, tightened onto bolts to create stronger connections. There are various types of nuts available, such as hex nuts, lock nuts, wing nuts, and coupling nuts, each intended for specific applications and offering unique advantages.

4. Washers:
Washers are thin flat disks usually made of metal or plastic. Their primary purpose is to distribute the load evenly across a surface and prevent damage due to excessive pressure or friction. CNC machining often utilizes flat washers, lock washers, and Belleville washers for specific applications. Washers are commonly used with screws, bolts, or nuts to improve stability, prevent loosening, and provide insulation.

5. Rivets:
Rivets serve as permanent fasteners in CNC machining, joining two or more materials together by deforming the end of the rivet after insertion. They are extensively used in construction, automotive, aerospace, and electrical industries where high strength and reliability are crucial. Blind rivets, solid rivets, tubular rivets, and split rivets are among the variations that cater to different assembly requirements and material compatibility.

6. Clips and Clamps:
Clips and clamps are versatile fasteners used in CNC machining to secure objects temporarily or during fabrication processes. They come in various forms like spring clips, C-clamps, U-clamps, toggle clamps, and quick-release clamps. These fasteners offer rapid setup times, repeatability, and adaptability, making them ideal for prototype production, jigs, fixtures, and holding workpieces firmly in place.


When it comes to CNC machining, the choice of fasteners plays a vital role in ensuring the durability, functionality, and structural integrity of the final product. Screws, bolts, nuts, washers, rivets, clips, and clamps each contribute to creating strong connections, enhancing efficiency, and simplifying the production process. Understanding the different types of fasteners available allows manufacturers to select the most appropriate components based on their application's demands. By leveraging these essential elements effectively, CNC machining continues to revolutionize manufacturing industries worldwide. CNC Milling CNC Machining