Article A Comprehensive Guide to Types of Fasteners in CNC print thread Bowen)

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Fasteners are essential components in many industries, including CNC machining. They play a crucial role in keeping various parts and components secure, ensuring the integrity and functionality of machines and structures. In this article, we will explore different types of fasteners commonly used in CNC machining processes and shed light on their production processes.

I. Bolts and Screws:
Bolts and screws are versatile fasteners widely utilized in CNC machining applications. These threaded fasteners are designed to fit into pre-tapped holes or nuts. Depending on the specific requirements, bolts can be produced using different materials such as stainless steel, carbon steel, or titanium. The production process involves cutting and shaping the threaded portion, heat treatment for strength improvement, and finally coating or plating for corrosion resistance.

II. Nuts:
Nuts complement bolts and screws by providing the necessary thread recipient. They come in various shapes and sizes, and like bolts, they can be manufactured from different materials based on the desired application. Nut production involves forming threads on the inner surface, followed by finishing processes such as polishing or galvanizing.

III. Rivets:
Rivets serve as permanent fasteners, joining multiple parts together through a specialized installation process that does not require access to both sides of the assembly. CNC machined rivets are typically made of materials like aluminum or steel. Production begins with blank cutting, followed by heating, forming, and cooling processes to shape the head and collar sections correctly.

IV. Washers:
Washers are flat metal rings with a central hole that distribute the load across the surface and prevent damage or distortion of the connected material. They can be manufactured from various metals, including stainless steel, brass, or copper, using CNC machining techniques. The production process includes blanking, punching the central hole, and surface treatment for smoothness and corrosion resistance.

V. Inserts:
Inserts, also known as threaded inserts or helicoils, provide additional strength and durability to materials with low load-bearing capabilities. These cylindrical metal fasteners have internal threads to receive bolts or screws securely. CNC machining is used to create the required helical grooves, followed by heat treatment for optimal hardness and precision cutting to ensure a perfect fit within the material.

VI. Studs:
Studs are similar to bolts but do not have a head, making them ideal for applications where both sides require threading. They are often employed in complex assemblies or parts that need frequent disassembling. Production involves machining the body to form external threads on one end, while leaving the other end plain or chamfered as necessary.

VII. Dowel Pins:
Dowel pins are cylindrical fasteners used to precisely align and hold two components together. Typically made from hardened steel or stainless steel, CNC machining processes enable their production with great accuracy and consistency. The manufacturing process includes blanking, surface grinding, and heat treatment to achieve the desired hardness.


Fasteners play a critical role in ensuring structural integrity and overall functionality in CNC machining processes. Understanding the different types of fasteners available and their production processes allows engineers and manufacturers to select suitable options based on specific application requirements. With CNC machining's precise capabilities, these fasteners can be accurately produced, contributing to reliable and robust systems across various industries. CNC Milling CNC Machining