Understanding Types of Fasteners for Efficient CNC Machining--cncmass.com(automotive screws Marguerite)

  • Time:
  • Click:8
  • source:CLAREY CNC Machining


When it comes to the precision and efficiency of CNC machining, the choice of fasteners plays a crucial role. These small components are essential in securing different parts together, ensuring their stability during the manufacturing process. Understanding the various types of fasteners that can be used in CNC machining is vital for optimizing production quality and reducing errors.

Exploring Common Fasteners Used in CNC Machining:

1. Screws:
Screws are the most widely used type of fastener in CNC machining. They consist of a threaded shaft with a head that allows tightening using a driver or wrench. The threads enable them to penetrate the material they are being drilled into firmly, offering excellent strength and reliability.

2. Bolts:
Similar to screws, bolts also feature a threaded shaft but typically lack a shaped head. Instead, they are accompanied by nuts, which secure two objects tightly together when tightened onto the bolt's thread. Bolts are versatile fasteners often utilized to join larger components in CNC machining applications.

3. Nuts:
Nuts complement bolts by securely holding multiple pieces together. They have an internally threaded hole that aligns with the external threading of bolts. The combination of bolts and nuts creates a robust connection that withstands vibrations and heavy loads in CNC machining operations.

4. Washers:
Washers are thin, flat discs with holes in the center. Their primary purpose is to evenly distribute the load generated during fastening procedures. Adding washers between the head of a screw or bolt and the surface provides stability, protects the surfaces from damage, minimizes friction, and prevents loosening over time.

5. Rivets:
Rivets are permanent fasteners used in CNC machining to join materials such as metal sheets together. They consist of a solid cylindrical shaft that is inserted into pre-drilled holes. Once in place, the end of the shaft is hammer-dimpled or mechanically deformed, creating a "head" on the other side that secures the materials firmly.

6. Clips and Clamps:
These types of fasteners are designed to hold components in place temporarily during CNC machining operations. They provide quick release and adjustment capabilities without causing damage to the pieces being secured. Clips and clamps come in various designs, including toggle clamps, spring clips, and retaining clips.

7. Anchors:
In situations where CNC machining involves working with materials such as concrete or masonry, anchors are indispensable. These special fasteners create secure connections by expanding within drilled holes, providing stability for subsequent fastening processes.

8. Inserts:
Inserts are commonly used in CNC machining when joining dissimilar materials or addressing weakened areas. They reinforce threads, ensuring better resistance against stripping or wear and tear. Inserts enable multiple threading options for assembling different components effectively.

9. Dowel Pins:
Dowel pins serve as precise alignment tools during CNC machining procedures. With their cylindrical shape, they fit precisely into pre-drilled holes, allowing accurate positioning of two or more parts. This type of fastener ensures high tolerance levels while reducing misalignment risks.


Effective CNC machining relies heavily on choosing the right types of fasteners for securing components together accurately and securely. Understanding the advantages and applications of screws, bolts, nuts, washers, rivets, clips, clamps, anchors, inserts, and dowel pins enhance production quality and efficiency. By utilizing the appropriate fasteners, manufacturers can achieve the desired precision, durability, and reliability throughout the CNC machining process. CNC Milling