Exploring the World of Fasteners in CNC Machining--cncmass.com(machining thread Sabrina)

  • Time:
  • Click:3
  • source:EAGLEBURGER CNC Machining


Fasteners play a crucial role in various industries, including manufacturing and construction. These vital components are responsible for securely joining different parts together, providing stability, strength, and reliability to countless products. In the realm of CNC machining, fasteners become even more important as precision-engineered parts rely heavily on their quality and compatibility.

Types of Fasteners Used in CNC Machining:

1. Screws:
Screws are commonly used fasteners in CNC machining due to their versatility and ease of use. They consist of a threaded cylindrical shaft with a head at one end and are tightened into pre-drilled or tapped holes. CNC machines employ screws for attaching multiple parts, securing supports, mounting fixtures, and holding workpieces together during the cutting process.

2. Bolts:
Bolts are similar to screws but usually have a larger diameter and lack a tapered shaft. They require a corresponding nut to facilitate tightening, making them ideal for applications that frequently undergo disassembly. CNC machining utilizes bolts when dealing with heavy loads, connecting structural components, or accommodating extra torque requirements.

3. Nuts:
Nuts are internally threaded fasteners designed to mate with bolts or screws. They come in various shapes and sizes, such as hexagonal, square, or winged. CNC machinists use nuts to create a strong bond between two parts by sandwiching them together while simultaneously applying torque to tighten the screw or bolt.

4. Washers:
Washers play a significant role in distributing load and preventing damage to surfaces under pressure. The most common types used in CNC machining are plain washers and spring washers. Plain washers provide increased bearing surface to reduce wear and increase stability, while spring washers exert tension to resist loosening caused by vibrations or thermal expansion.

5. Rivets:
Rivets are permanent fasteners used mainly in CNC machining for joining materials that cannot be easily accessed on both sides. They consist of a cylindrical shaft with a head at one end and are installed by deforming the opposite end to secure components together. Riveting is widely employed in aircraft manufacturing, automotive industry, and structural applications that demand exceptional strength.

6. Dowel Pins:
Dowel pins are small cylindrical fasteners used as precise alignment aids in CNC machining. They have tight tolerances to ensure accurate positioning during assembly processes. Dowel pins are typically press-fitted into pre-drilled holes and securely hold jigs, fixtures, or workpieces in place, improving overall dimensional accuracy and repeatability.

7. Anchors:
Anchors are specialized fasteners used when attaching items to various surfaces, such as concrete or masonry. In CNC machining applications, anchors find their utility in securing heavy machinery, mounting brackets, or critical equipment to prevent unwanted movement due to vibration or external forces.


Understanding the different types of fasteners used in CNC machining ensures optimal performance, reliability, and longevity of precision-engineered products. Whether it's screws, bolts, nuts, washers, rivets, dowel pins, or anchors, each fastener has its unique functionality and purpose.

CNC machine operators and manufacturers must carefully select the appropriate fasteners based on factors like load requirements, material compatibility, environmental conditions, and ease of installation. By incorporating the right fastening solutions, CNC machining can achieve outstanding product quality, mechanical integrity, and customer satisfaction. CNC Milling CNC Machining