Exploring the Various Types of Fasteners for CNC Machining--cncmass.com(brass vs bronze vs copper York)

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Fasteners play a crucial role in the field of CNC machining. They are essential components that secure two or more objects together, ensuring stability and structural integrity. From screws to bolts to nuts, fasteners come in various forms and types that cater to different requirements and applications. In this article, we will delve into the world of fasteners used in CNC machining and explore their functions, characteristics, and production methods.

1. Screws:
Screws are among the most commonly used fasteners in CNC machining. They have threads on their outer surface, allowing them to be easily inserted into holes and maintain a firm grip. Depending on the specific application, screws can be differentiated by their head type (such as flathead, pan head, or round head) and drive style (slotted, Phillips, hex, etc.). Manufacturing screws involves processes like cold forging, heat treatment, and precision grinding, resulting in durable and high-quality products.

2. Bolts:
Bolts, similar to screws, also feature external threading but differ in their function. While screws bind objects together directly, bolts require a separate nut for securing multiple components. The combination of bolts and nuts provides excellent load-bearing capabilities, making them suitable for heavy-duty applications in CNC machining. Bolt manufacturing involves hot forging, thread rolling, and annealing to ensure strength and resilience.

3. Nuts:
Nuts complement bolts in creating strong joints by mating with the bolts' threaded shafts. Like screws and bolts, nuts come in various styles, including hexagonal, square, wing, and flange nuts. Most nuts are produced through stamping or machining processes where raw materials undergo cutting, shaping, and finishing stages. High-quality nuts should exhibit accurate dimensions, proper internal threading, and corrosion resistance.

4. Rivets:
Rivets are permanent fasteners without any screws, bolts, or nuts. They consist of a cylindrical shaft and a head on one end, which expands while being inserted into an assembly. The expansion forms a second head, securing the objects in place. CNC machined rivets find applications in constructing structures that require permanent connections, such as aerospace components or automotive frames. Rivet production involves precision drilling, forming, and finishing processes to ensure proper insertion and tight sealing.

5. Washers:
Washers are flat, thin discs used in conjunction with screws, bolts, or nuts. They distribute the load and prevent damage to the surface being fastened by providing a smooth interface. The two major types of washers are plain washers and spring washers. Plain washers primarily offer protection from wear and tear, while spring washers provide resistance against loosening due to vibrations. Manufacturing washers typically entails cutting out discs from sheets of metal and adding any necessary finishing touches like washing or coating.


The world of CNC machining relies heavily on various types of fasteners to achieve reliable and sturdy assemblies. From screws and bolts that bind components together to nuts and washers that enhance stability and prevent damage, each type of fastener serves a unique purpose. It is crucial to understand their functions, characteristics, and appropriate manufacturing methods to ensure optimal performance and longevity in CNC machining applications. By exploring these different fasteners, manufacturers can make informed decisions while selecting the right type for their specific needs. CNC Milling CNC Machining