Exploring the Various Fasteners Used in CNC Machining(metal surface Nigel)

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CNC machining is a widely used manufacturing process that involves the use of computer-controlled machines to create intricate and precise parts from various materials. One crucial aspect of this process is securing different components together, which requires the use of reliable fasteners. In this article, we will delve into the world of CNC machining and explore the types of fasteners commonly utilized in this industry.

1. Bolts and Screws:

Bolts and screws are ubiquitous fasteners that find extensive usage in CNC machining. These threaded fasteners come in various shapes, sizes, and designs, allowing for flexibility and adaptability in different applications. Bolts typically involve the use of nuts to secure two or more parts together, while screws engage directly with the material they are being fastened into. Both bolts and screws can be made from different materials, such as steel, stainless steel, or brass, depending on the specific requirements of the project.

2. Rivets:

Rivets provide an excellent means of permanently joining multiple components together during CNC machining. They consist of a cylindrical shaft with a head at one end, and upon installation, the non-head end is deformed to securely hold the components in place. Because rivets do not rely on threads for fastening, they offer superior resistance against vibrations and are primarily used when durability is essential.

3. Nuts:

Nuts are indispensable components in CNC machining, acting as counterparts to bolts and screws. Available in numerous shapes (hexagonal, square, etc.) and configurations (standard, lock nuts), they allow for easy assembly and disassembly when necessary. Nuts, like bolts and screws, are fabricated using various materials and coatings to enhance their properties, such as strength, corrosion resistance, and temperature tolerance.

4. Washers:

Washers serve manifold purposes in CNC machining. Acting as spacers between fasteners and components, they distribute the load evenly and prevent damage to the surface. Additionally, washers can function as lock devices, preventing nuts or bolts from loosening due to vibrations or factors like thermal expansion in high-temperature applications.

5. Inserts:

Thread inserts are widely used in CNC machining when dealing with softer materials that cannot support a direct threaded connection. Inserts come in various forms but generally involve drilling a hole in the base material and then installing an insert inside through heat or ultrasonic insertion methods. These inserts provide a robust and durable threading solution for subsequent bolt or screw installation.


CNC machining relies heavily on the usage of reliable and efficient fasteners to ensure sturdy connections between different parts and components. Bolts, screws, rivets, nuts, washers, and inserts offer immense versatility and functionality in this field. By understanding the purpose and unique characteristics of each fastener type, manufacturers can make informed decisions when it comes to selecting the most suitable options for their specific projects. So, whether you're a seasoned professional or someone new to the realm of CNC machining, having comprehensive knowledge about these varied fasteners will undoubtedly contribute to achieving flawless results and solidifying the structural integrity of your designs. CNC Milling