Exploring the Different Types of Fasteners for CNC Machining--cncmass.com(brass vs. bronze Bess)

  • Time:
  • Click:7
  • source:PERFSO CNC Machining


CNC machining plays a vital role in several industries, including aerospace, automotive, and electronics, among others. This sophisticated manufacturing process relies on precise tools and equipment, one of which is fasteners. In this article, we will delve into the various types of fasteners used in CNC machining, their applications, and how they are produced.

1. Bolts and Screws:

Bolts and screws are essential components in CNC machining, designed to hold parts together securely. These threaded fasteners come in a range of sizes, materials, and head shapes. Depending on the application, bolts can be stud, hex, or shoulder bolts. Meanwhile, screws can have flat heads, pan heads, round heads, or other variations.

The production of bolts and screws involves precision machining processes like threading, cutting, and shaping. The choice of material, such as stainless steel, titanium, or alloy steel, depends on factors like strength requirements and environmental conditions.

2. Nuts:

Nuts complement bolts and screws by providing the necessary thread engagement for secure fastening. Hex nuts, lock nuts, and flange nuts are commonly used in CNC machining. With various designs and finishes available, these nuts ensure reliable connections between components.

Manufacturing nuts involves turning processes that shape them into the desired dimensions and forms. Similar to bolts and screws, nut materials are carefully chosen to withstand specific operating conditions, facilitating long-lasting and sturdy assemblies.

3. Washers:

Washers play a crucial role in distributing the load evenly across fasteners and reducing friction. They protect surfaces from damage caused by bolt tightening and offer stability in assemblies. Flat washers and spring washers are widely utilized in CNC machining projects.

During production, washers undergo stamping operations to impart ideal thickness and shape. Materials like stainless steel, brass, and nylon are often selected for their strength and corrosion resistance.

4. Rivets:

Rivets are permanent fasteners used when welding or screwing is not a feasible option. Mainly used in joining structural components, they provide robust connections without compromising the integrity of the material. Solid, blind, and tubular rivets find applications across various industries.

The production process involves inserting the rivet into pre-drilled holes and deforming it to secure two or more materials. High-strength aluminum alloys and stainless steel are commonly chosen for their durability and resilience.

5. Inserts:

Threaded inserts offer enhanced holding power when attaching components with softer or weaker materials. They serve as reinforcement for these components, improving their ability to withstand tension and shear forces. Helical, key-locking, and press-fit inserts are often utilized in CNC machining.

To produce threaded inserts, the threads are either cut or molded using machines that ensure precise tolerances. The choice of material, such as brass, stainless steel, or aluminum, depends on factors like weight requirements and chemical compatibility.


Fasteners are critical components in CNC machining processes, ensuring reliable and durable assemblies. Understanding the different types available, their applications, and how they are produced is essential for anyone involved in manufacturing and assembly operations. Whether it's bolts, nuts, washers, rivets, or inserts, each type serves a specific purpose, contributing to the overall quality and functionality of CNC machined products. By considering the unique requirements of each project, manufacturers can choose the right fastener that ensures optimum performance and longevity. CNC Milling