Exploring the Different Types of Fasteners Used in CNC Machining--cncmass.com(how to get a broken tap out Baldwin)

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CNC machining is a highly efficient and precise manufacturing process that uses computer numerical control to shape various materials into finished products. While this technology plays a crucial role in creating intricate parts, fasteners are equally important in ensuring the structural integrity and longevity of assembled components. In this article, we will delve into the world of fasteners used in CNC machining and explore their different types and applications.

1. Bolts and Screws:

Bolts and screws are perhaps the most commonly used type of fasteners in CNC machining. These cylindrical threaded fasteners provide the necessary clamping force when tightened into internally threaded holes or nuts. Available in various sizes, lengths, and thread patterns, bolts and screws allow for secure joints within different materials like metal, plastic, and wood.

2. Nuts:

Nuts are companion fasteners to bolts and screws, as they feature internal threads that engage with external threads on these fasteners. They come in different forms such as hexagonal nuts, square nuts, wing nuts, and more. Nuts serve the purpose of evenly distributing the clamping load and preventing loosening due to vibrations or other external factors.

3. Washers:

Washers are thin plates typically made from metallic alloys or polymers. They are placed between the head of a bolt/screw or nut and the surface of the material being fastened. The primary function of washers in CNC machining is to distribute the load, prevent damage to the material's surface, and enhance stability by providing a flat bearing surface.

4. Rivets:

Rivets are permanent mechanical fasteners widely used in CNC machining for joining two or more materials together. Unlike bolts or screws, rivets do not require access to both sides of the joined components. They consist of a cylindrical shaft called a shank and a head at one end. During the installation process, the rivet is inserted into pre-drilled holes and then deformed to form a head on the opposite side, securing the components tightly.

5. Clips and Clamps:

In CNC machining, clips and clamps play a vital role in securing irregularly shaped or delicate materials during the manufacturing process. These fasteners provide temporary fixation and eliminate the need for permanent alterations such as drilling holes. Clips are commonly used to hold wires, cables, or tubes in place, while clamps can be utilized to secure fragile objects like glass panels.

6. Dowel Pins:

Dowel pins are precision cylindrical fasteners that provide accurate alignment between two mating components. They are designed with tight tolerances to ensure precise positioning. Commonly made of steel, dowel pins are often used in CNC machining to maintain the correct orientation and prevent unnecessary shifting or misalignment of parts.

7. Anchors:

Anchors are specialized fasteners extensively utilized in CNC machining when attaching components to concrete, masonry, or other hard surfaces. They expand within the material's substrate to create a secure attachment point for screws, bolts, or hooks. Anchors are available in various designs, including sleeve anchors, wedge anchors, drop-in anchors, and many more, each suited for different load capacities and application requirements.


Understanding the various types of fasteners used in CNC machining is crucial for ensuring successful assembly, structural integrity, and overall product quality. By selecting the appropriate fasteners for specific applications and considering factors such as material compatibility, load capacity, and environmental conditions, manufacturers can achieve reliable and long-lasting results. Whether it's bolts, nuts, washers, rivets, clips, clamps, dowel pins, or anchors, each type serves a unique purpose in maintaining the stability, functionality, and longevity of CNC machined products. CNC Milling