Exploring the Types of Fasteners Used in CNC Machining--cncmass.com(3d printing threads Beatrice)

  • Time:
  • Click:4
  • source:BAGANZ CNC Machining


CNC machining, also known as Computer Numerical Control machining, is a highly efficient and precise manufacturing process used to produce various components and parts. In this article, we will delve into the world of fasteners, specifically focusing on the different types employed in CNC machining applications. Fasteners play a vital role in assembling objects securely, ensuring structural integrity and longevity. Let's explore some commonly used fasteners in CNC machining.

1. Bolts and Screws:
Bolts and screws are popular fasteners extensively utilized in CNC machining. Made from materials such as stainless steel, aluminum, or titanium, these fasteners contain threads that grip surfaces firmly. They come in various head configurations like hexagonal, socket, round, or flat-head. Bolts typically feature an external threading while screws possess internal threading. These versatile fasteners can be tightened using tools like wrenches or screwdrivers.

2. Nuts:
Nuts complement bolts and screws by providing a secure connection during assembly. Available in different shapes like hexagonal, square, wing, or flange, nuts are internally threaded and cylindrical in shape. With their counter-threading design, they lock onto the bolt or screw when tightened, enhancing stability and preventing loosening due to vibrations or heavy loads.

3. Washers:
Washers are thin, flat discs placed between nuts or bolts/screws and the mating surfaces. They act as spacers, distributing the load evenly and protecting the surface from damage caused by tightening forces. Commonly manufactured from metal or plastic materials, washers increase friction, prevent leaks, reduce vibration, and ensure better load distribution, making them crucial in CNC machining applications.

4. Rivets:
Rivets offer strong, permanent fastening solutions for CNC machining projects where welding or adhesive bonding may not be feasible. Typically made from metals like aluminum, copper, or steel, rivets consist of a solid shaft and a cylindrical head. The installation process involves inserting the hollow end into pre-drilled holes and then deforming its other end using a special tool, creating a secure joint. Rivets find extensive use in industries such as automotive, aerospace, and construction.

5. Pins:
Pins are versatile fasteners used for alignment, coupling, or securing purposes in CNC machining. They come in various shapes like straight, tapered, dowel, or spring pins. Straight pins have uniform diameter throughout their length, while tapered pins gradually decrease in size from one end to another. Dowel pins ensure accurate alignment between components, while spring pins utilize spring pressure to keep parts together. Investigating the specific pin types required for an assembly is essential for optimal results.

6. Anchors:
Anchors provide stability and strength to structures by securely attaching them to concrete, masonry, or other base materials. Widely used in building applications, anchors enable the installation of machinery, cabinets, or fixtures on walls, floors, and ceilings. Different anchor designs include expansion anchors, screw anchors, drop-in anchors, and wedge anchors. Each type requires specific drilling techniques and insertion methods to maintain the integrity of the connection in CNC machining projects.


Fasteners are indispensable elements in CNC machining that ensure the structural integrity, reliability, and longevity of assembled objects. Bolts, nuts, washers, rivets, pins, and anchors fulfill various requirements across different manufacturing sectors. Understanding the functionalities, designs, and characteristics of these fasteners plays a pivotal role in efficiently utilizing CNC machining processes. By appropriately selecting and applying the right fasteners, engineers and manufacturers can achieve optimal performance, ultimate precision, and robust assemblies in their CNC machining projects. CNC Milling