Exploring the Different Types of Fasteners for CNC Machining--cncmass.com(manual lathes Dylan)

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CNC machining has revolutionized the manufacturing industry with its high precision and automation capabilities. A vital aspect of CNC machining is the use of fasteners, which are essential for securely holding multiple components together during the machining process. In this article, we will delve into the various types of fasteners used in CNC machining and their significance.

1. Screws:
Screws are versatile fasteners that play a crucial role in securing components during CNC machining. They are available in numerous sizes, designs, and materials to suit specific applications. From wood screws to machine screws, self-tapping screws to socket head cap screws, each type serves a unique purpose. Assembled using threads, screws provide flexible clamping force and can easily be tightened or loosened as required.

2. Bolts:
Similar to screws, bolts are another common type of fastener used in CNC machining. However, while screws thread into tapped holes, bolts pass through clearance holes and secure components on the other side using nuts. Bolts come in an array of shapes, such as hexagonal heads, countersunk heads, and round heads, among others. They offer reliable strength, making them indispensable in heavy-duty applications where exceptional durability is required.

3. Nuts:
Nuts are companion fasteners that work in conjunction with bolts to hold components tightly in place. They come in various configurations like square, hexagonal, and flanged, offering different levels of grip and torque resistance. Nut styles, such as nylon-insert lock nuts, prevailing torque nuts, and wing nuts, serve specific purposes like increased vibration resistance or ease of tightening without tools.

4. Washers:
Washers are flat, ring-shaped fasteners placed between the bolt/nut and the surface it secures. Their primary function is to distribute load evenly, prevent damage, and reduce friction under the fastener. This helps to improve stability and prevent loosening due to vibration or repetitive motion. Common types of washers include flat washers, spring washers, and lock washers, each tailored for specific applications.

5. Rivets:
Rivets provide a permanent and secure fastening method by joining two or more materials together without the need for nuts or bolts. They consist of a head on one side and a cylindrical shaft that expands when pressure is applied, securely holding the materials in place. Blind rivets, solid rivets, and drive rivets are commonly used in CNC machining as they offer high load-bearing capacity and resistance to vibrations.

6. Inserts:
Threaded inserts are commonly employed in CNC machining to add strong threads to soft or thin-walled materials. These inserts are inserted into pre-drilled holes and provide robust threading for screws or bolts. Helical coil inserts, heat-set inserts, and press-fit inserts are popular options depending on the material being machined. Inserts enhance the durability and strength of components while allowing for easy removal and replacement if required.


Fasteners play an indispensable role in ensuring the integrity and precision of components during CNC machining processes. From screws and bolts to nuts, washers, rivets, and inserts, each type has its unique purpose and contributes to the overall quality of the products manufactured. To achieve optimal results, it is crucial to consider the specific requirements of the application and choose the appropriate fasteners accordingly. With constant advancements in technology, CNC machinists now have access to an extensive range of versatile fasteners that give them the flexibility and reliability needed to produce exceptional products efficiently. CNC Milling