Understanding the Essential Types of Fasteners for CNC Machining--cncmass.com(whats bronze made of Joy)

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When it comes to precision manufacturing processes like Computer Numerical Control (CNC) machining, ensuring strong and reliable connections is crucial. Fasteners play a vital role in securing various components in place, contributing to the overall functionality and longevity of machined parts. In this article, we will explore the different types of fasteners used in CNC machining and their importance in producing high-quality products.

1. Bolts and Screws:

Bolts and screws are common fasteners that are utilized extensively in CNC machining. They provide robust joining capabilities by holding two or more components together firmly. Bolts typically have hexagonal heads and require nuts to secure the joint tightly. On the other hand, screws feature threaded shafts and often hold themselves securely within pre-tapped holes. Depending on the application, they can either be tightened manually or using power tools.

2. Nuts and Washers:

Nuts are complementary to bolts and help create a tight connection when paired appropriately. These small metal pieces are internally threaded to screw onto bolts, ensuring stability and strength. There are various types of nuts available, such as Hex, Wing, Square, and Flange nuts, each with specific applications.

Washers, although seemingly insignificant, are equally important. They distribute the load more evenly across the surface while protecting the materials being joined. Flat washers, lock washers, and spring washers are commonly used in CNC machining, depending on the desired function and level of security needed.

3. Rivets:

Rivets are permanent fasteners commonly used to join metal workpieces that cannot easily accommodate more traditional fasteners. They consist of a cylindrical body and a mandrel that secures the rivet in place during installation. Riveting involves deforming the rivet through heat or mechanical force, creating a broad head on one end, which holds the materials together effectively.

4. Tapping:

Tapping is a process employed to create internal threads in pre-drilled holes without the need for nuts or washers. By utilizing special tools, CNC machines can cut threads into various materials such as metals, plastics, and wood. This technique enables screws to thread directly into the workpiece, eliminating the requirement for separate fastener components.

5. Inserts:

Inserts are commonly used to provide additional strength and durability to threaded connections. They are placed within tapped holes to reinforce threading and prevent damage due to repetitive use. Additionally, inserts allow for different types of material compatibility, making them an excellent choice for creating strong and reliable fastenings in CNC machining applications.

6. Anchors:

Anchors are essential when dealing with non-permanent connections or attaching objects to materials that do not possess inherent strength for holding fasteners alone. These devices expand within drilled holes to anchor themselves securely in place. Common examples include wall anchors, concrete anchors, and toggle bolts, ensuring stability and versatility in a wide range of applications.


Understanding the various types of fasteners used in CNC machining is vital for producing high-quality products. Whether it's bolts and screws for secure joints or rivets for permanent connections, each type of fastener plays a crucial role in providing strength, reliability, and functionality to machined parts. Nuts, washers, tapping techniques, inserts, and anchors further enhance the overall robustness and longevity of these connections. By leveraging the right combination of fasteners, manufacturers can ensure top-notch performance while meeting specific design requirements in today's demanding CNC machining processes. CNC Milling CNC Machining