A Guide to Types of Fasteners in CNC Machining--cncmass.com(bronze vs brass Baron)

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CNC machining is a revolutionary manufacturing process that utilizes computer-controlled machines to produce highly precise and complex parts from various materials. One critical aspect of CNC machining is the use of fasteners, which play an essential role in securing components together. These fasteners come in different types, each serving specific purposes. In this article, we will explore the world of CNC machining and discuss various types of fasteners used in this process.

1. Screws:

Screws are one of the most common types of fasteners used in CNC machining. They consist of threaded cylindrical rods with a head at one end and a helical groove (thread) along their length. Screws are designed to be rotated into pre-drilled holes using screwdrivers or wrenches. They provide excellent holding power and are ideal for applications where disassembly is required. Popular examples include machine assembly, fabrication, automotive industries, and assembling electronic devices.

2. Bolts:

Similar to screws, bolts are externally threaded fasteners typically used with nuts for added stability. The main difference lies in their application; while screws are commonly used when assembling between two components, bolts are more suited for joining heavier structures or parts together. Bolts provide powerful clamping force due to their ability to withstand heightened tension or vibration, making them crucial for secure connections in CNC machinery or construction projects.

3. Nuts:

Nuts are internally threaded, often hexagonal-shaped fasteners used alongside bolts and other threaded mechanisms. They are tightened onto bolts to create a strong and secure joint. Alongside traditional hex nuts, there are variations such as locknuts, flange nuts, wing nuts, and T-nuts—each serving its particular purpose. Nuts are invaluable in the CNC machining world, providing adjustable and detachable assemblies whenever needed.

4. Rivets:

Rivets offer a unique fastening mechanism that doesn't require threaded holes. They consist of a smooth cylindrical shaft with a head at one end, often shaped as a dome or flat piece. The rivet is inserted through aligned holes in the materials being joined and then hammered or compressed to form a secure connection. Commonly used in aerospace industries, where weight reduction is crucial, rivets create strong and permanent bonds without protruding heads like screws or bolts.

5. Welding:

Though not conventionally considered a fastener, welding plays a significant role in CNC machining assembly processes. It involves joining two metal components by melting and fusing them together, forming an incredibly sturdy bond. Welding techniques such as TIG (Tungsten Inert Gas), MIG (Metal Inert Gas), and spot welding are widely used in various manufacturing sectors due to their unmatched strength and durability.


CNC machining revolutionizes the world of manufacturing, allowing for precise production of intricate parts. Fasteners play a vital role in this process, providing stability and enabling efficient assembly. From screws and bolts ensuring tight connections to nuts offering adjustability and rivets creating permanent bonds, each type of fastener has its unique purpose. By understanding these options, manufacturers can optimize output, enhance product quality, and ensure seamless integration of CNC-machined components. CNC Milling CNC Machining