Exploring the Different Types of Fasteners Used in CNC Machining--cncmass.com(bronze definition Norton)

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When it comes to CNC machining, fasteners play a vital role in securing parts and components together. These small yet crucial elements ensure the reliability and stability of the final product. In this article, we will dive into the world of fasteners used in CNC machining processes. From screws and bolts to rivets and nuts, we will explore the various types of fasteners commonly utilized in manufacturing industries.

1. Screws:
Screws are one of the most common types of fasteners extensively used in CNC machining. They come in different sizes and shapes, each serving specific purposes. Machine screws, self-tapping screws, sheet metal screws, and wood screws are some examples. The choice of screw depends on factors such as material compatibility, load-bearing requirements, and environmental conditions.

2. Bolts:
Similar to screws, bolts are essential fasteners in CNC machining. Unlike screws, however, bolts require a nut to secure them in place. Bolts provide excellent tensile strength and can withstand heavy loads. Hex bolts, carriage bolts, and eye bolts are all variants of bolts commonly employed in CNC machining applications.

3. Nuts:
Nuts are companion pieces to bolts, acting as counterparts that help in forming a robust assembly. Typically available in hexagonal shape, nuts are threaded holes designed to fit onto bolts. A wide range of nuts exists, including standard nuts, wing nuts, locknuts, and flange nuts. Each type serves a unique purpose, be it preventing loosening under vibration or providing additional gripping strength.

4. Rivets:
Rivets are permanent fasteners widely used in CNC machining. They consist of two separate parts – a headed pin (the rivet) and a solid cylindrical piece known as a mandrel. Rivets find their application where regular disassembly is not required or when joining dissimilar materials. Industries like aerospace, automotive, and construction extensively use rivets due to their exceptional strength and longevity.

5. Washers:
Although often overlooked, washers play a crucial role in maintaining the integrity of fastened joints. They are small flat disks with a hole in the center, placed between the nut or bolt head and the material being secured. Washers distribute the load over a wider area, preventing damage to the material while providing better stability.

6. Anchors:
Anchors are specialized fasteners used for securing objects to concrete, brick, or other solid surfaces. They provide extra holding power where traditional screws or bolts may not be effective. Common anchor types include expansion anchors, sleeve anchors, and wedge anchors. Anchors find applications in various industries ranging from construction to furniture manufacturing.

7. Pins and Clips:
Pins and clips serve as temporary fasteners that can be easily inserted and removed without causing any permanent damage. Cotter pins, retaining rings, hairpin clips, and E-clips fall into this category. These fasteners are ideal for quick assembly and disassembly situations, allowing for easy maintenance and repair.


Fasteners are an integral part of CNC machining processes, ensuring the structural integrity and functionality of the final product. From screws and bolts to rivets and nuts, each type serves a specific purpose in joining components together. Carefully selecting the appropriate fastener based on factors such as material compatibility, load-bearing capacity, and environmental conditions is essential for creating reliable and durable assemblies in CNC machining operations.

Remember, utilizing high-quality fasteners and adhering to industry standards significantly contributes to the success of any CNC machining project, ultimately leading to superior end products admired by both manufacturers and consumers alike. CNC Milling