Exploring the Various Types of Fasteners in CNC Machining--cncmass.com(anodized finish Penelope)

  • Time:
  • Click:44
  • source:BREDA CNC Machining


CNC machining is a highly precise manufacturing process that utilizes Computer Numerical Control (CNC) systems to control and operate machine tools. This advanced technology has revolutionized the manufacturing industry, allowing for the production of complex and accurate parts. In this article, we will explore the indispensable components within CNC machining - fasteners. We will delve into the various types of fasteners used, their applications, and how they contribute to the overall efficiency and reliability of CNC machined products.

Understanding Fasteners:

Fasteners are mechanical devices used to join or secure two or more objects together. They play a crucial role in CNC machining as they ensure proper alignment, support, and holding force for assembled parts. Fasteners come in an extensive variety of shapes, sizes, materials, and configurations to suit different requirements. Below, we will discuss some common types of fasteners utilized in CNC machining:

1. Screws:
Screws are versatile fasteners with helical threads that provide excellent grip when inserted into pre-tapped holes. Their configuration enables easy insertion and rotational tightening using various driving tools such as screwdrivers or wrenches. Screws come in different head styles (flathead, roundhead, pan-head), drive types (Phillips, slotted, hex socket), and thread patterns (coarse, fine, machine screws). These factors determine the specific application areas for screws.

2. Bolts:
Bolts resemble screws but differ in being externally threaded along their entire length. They require nuts on the opposite side of the assembly to join two or more parts. Bolts offer high tensile strength and are commonly used for heavy-duty applications where increased load-bearing capacity is needed.

3. Nuts:
Nuts are internally threaded and used together with bolts to create a secure fastening mechanism. By gripping onto the bolt's external threads, nuts prevent loosening due to vibration or external forces. Popular types of nuts include hex, wing, and cap nuts, each suitable for specific applications.

4. Washers:
Washers provide support and distribute the load more evenly across a joint. They are placed between the nut or bolt head and the surface of the material being fastened. Common washer designs include flat washers, split lock washers, and toothed washers. Their presence prevents damage to the underlying surface and minimizes stress concentration points.

5. Rivets:
Rivets are non-threaded fasteners that hold together two or more parts by deforming (using heat) or expanding (by mechanical force) the tail end once inserted through pre-drilled holes. They offer excellent shear resistance and are widely used in structural applications, automotive industries, and aerospace sectors where reliable joints are essential.

6. Anchors:
Anchors are fasteners used when there is no existing hole or tapped thread available as an attachment point. They provide stability by utilizing different mechanisms such as expansion (expanding anchors), gripping (toggle bolts), or bonding (adhesive anchors). Anchors are vital in securing CNC machined components to various surfaces including concrete, drywall, or wood.


Fasteners are fundamental elements within CNC machining, ensuring the integrity and longevity of assembled products. From screws and bolts to nuts, washers, rivets, and anchors, each type brings unique attributes suited for different requirements. Understanding these fastening options helps manufacturers achieve precise and sturdy connections in their CNC machining processes. By selecting the appropriate combination of fasteners, manufacturers can produce high-quality parts with exceptional accuracy and reliability, ultimately contributing to the overall success of CNC machined products. CNC Milling CNC Machining