A Comprehensive Guide to Types of Fasteners in CNC Machining--cncmass.com(difference between cold rolled and hot rolled steel Clara)

  • Time:
  • Click:2
  • source:TAMIKO CNC Machining


Fasteners play a pivotal role in the world of manufacturing, construction, and engineering. They provide structural integrity by holding components together securely. In the realm of computer numerical control (CNC) machining, fasteners are essential for assembling parts accurately and efficiently.

This article aims to explore the various types of fasteners commonly used in CNC machining processes, shedding light on their distinctive characteristics and applications.

1. Bolts and Nuts:

Bolts and nuts are perhaps the most familiar types of fasteners. They work as a pair, with the bolt threading through a hole in one component and securing it tightly using a nut. These versatile fasteners come in countless sizes and can accommodate different thread patterns.

In CNC machining, bolts and nuts are vital for maintaining sturdy connections between parts, ensuring precision and stability during operations. Precision machining techniques enable producing custom-made bolts and nuts tailored specifically for varied machining projects.

2. Screws:

Screws are threaded fasteners that generate forces to hold materials firmly together when rotated. Unlike regular bolts, screws don't require a separate nut for installation. Self-tapping screws eliminate the need for pre-drilled holes, serving as both the drill bit and fastening element simultaneously.

Screws find extensive usage in CNC machining, especially for fastening softer materials like plastic or wood. Different head types – such as round, flat, hexagonal, or Phillips – offer specific application advantages based on accessibility requirements.

3. Washers:

Washers act as protective elements while distributing load evenly across a fastened joint. Available in various shapes, including flat and spring washers, they help prevent damage caused by tightening force concentration. Spring washers also assist in preventing loosening due to vibrations or shocks.

When deploying fasteners in CNC machining, incorporating washers becomes paramount to minimize wear and tear, increase stability, and maintain integrity in high-stress applications.

4. Rivets:

Rivets are permanent, non-threaded fasteners ideal for joints that require exceptional strength and reliability. With two components secured by a rivet, they provide a sturdy bond while allowing rotational movement between the parts when necessary.

In CNC machining processes, rivets find utility in assembling parts where welding might prove inconvenient or structurally inadequate. By choosing suitable materials and employing precision techniques, manufacturers can produce custom rivets to suit specific project needs efficiently.

5. Pins:

Pins serve different purposes during CNC machining operations. Dowel pins, for instance, ensure precise alignment of components, maintaining accuracy and avoiding misalignment issues. Clevis pins, on the other hand, offer secure pivot points in diverse mechanical systems.

Fastening elements like pins showcase the versatility of CNC machining, as custom sizes and configurations can be easily manufactured based on design requirements.


Whether it's bolts, screws, washers, rivets, or pins, understanding the various types of fasteners used in CNC machining enables efficient assembly, promotes structural integrity, and enhances overall operational quality. CNC technology allows manufacturers to create these fasteners with exacting precision, tailored to meet specific project demands.

Employing the right type of fastener in each application is crucial for ensuring optimal performance and longevity. Leveraging knowledge about fastener options empowers engineers, machinists, and manufacturers to build robust and reliable systems, underpinning progress across various industries. CNC Milling CNC Machining