Exploring the Different Types of Fasteners in CNC Machining(welded vs riveted Ingram)

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In the world of precision engineering, CNC machining plays a vital role in creating high-quality products. This advanced manufacturing technology utilizes computer-controlled machines to shape and form various materials with incredible accuracy. Among the essential components in CNC machining are fasteners – crucial elements that hold objects together securely. In this article, we will delve into the different types of fasteners used in CNC machining processes, providing insights into their production and applications.

1. Screws:
Screws are widely-used types of fasteners known for their excellent holding power. They consist of a threaded shaft wrapped around a helical groove called threads. The common types include wood screws, machine screws, self-tapping screws, and sheet metal screws. To produce screws, manufacturers use CNC milling or turning machines to precisely cut threads on the screw's surface. Screw threads offer gripping strength when inserted into a material, making them ideal for securing components in place.

2. Bolts:
Bolts are similar to screws but differ in usage. They require a nut to secure two or more objects together. Bolts have a smooth shank with threading only at one end, while the other end features a head for application of torque. CNC machining is employed to manufacture bolts by cutting precise threading on the shank as well as shaping the head according to specific requirements. Bolts find extensive application in construction, automotive, aerospace, and other industries due to their ability to endure heavy loads and provide strong connections.

3. Nuts:
Nuts are fasteners designed to work in conjunction with bolts. These small, yet significant components typically have a threaded hole, allowing them to be tightened onto a bolt or a shaft to secure objects together. Producing nuts involves CNC turning techniques to create an accurate internal threading compatible with a selected bolt diameter. Various designs such as hexagonal (hex) nuts, lock nuts, wing nuts, and cap nuts fulfill specific functions based on their unique features.

4. Washers:
Washers play a vital role in preventing fastener failure due to loosening or material damage. These flat, disc-shaped components are placed between the head of the fastener (bolt or screw) and the surface of the joint being secured. By distributing the load evenly and reducing friction, washers ensure improved stability and prevent premature wear in CNC machined assemblies. CNC machining can create washers with consistent thickness and accurate shapes according to specific requirements.

5. Rivets:
Rivets represent specialized fasteners used in applications where welding or soldering is impractical or impossible. They consist of a smooth cylindrical shaft called a mandrel topped by a bulbous tail at one end. To install rivets, a hole is drilled through the materials to be joined, and then the mandrels are inserted into position using hydraulic pressure or impact force. Once set, the excess mandrel is removed to securely connect the two pieces. CNC machining ensures precise drilling and forming of rivet holes, ensuring structural integrity in critical applications such as aerospace manufacturing.


In summary, understanding the different types of fasteners utilized in CNC machining processes is crucial for achieving durable and mechanically stable products. Screws, bolts, nuts, washers, and rivets are among the common fasteners employed to secure components together effectively. CNC machining techniques enable the production of these fasteners with high precision, resulting in reliable connections that withstand heavy loads and environmental factors. By harnessing the power of CNC machining and employing appropriate fasteners, manufacturers can optimize the quality and performance of their products in various industries. CNC Milling