Exploring Various Types of Fasteners in the World of CNC Machining--cncmass.com(is alloy steel strong Zachary)

  • Time:
  • Click:6
  • source:BREDA CNC Machining


In the realm of CNC machining, fasteners play a vital role in holding components together securely. From screws to bolts to nuts and more, these small but mighty devices ensure structural integrity and functionality in various machinery and equipment. In this article, we will delve into the different types of fasteners commonly used in CNC machining processes.


One of the most widely recognized fasteners are screws. Available in numerous designs such as flat-head, pan-head, round-head, socket head cap screws, and more, screws are versatile and multi-purpose. Their ability to provide secure fastening with easy removal makes them indispensable in manufacturing applications. Screws are typically made from materials like stainless steel or steel, ensuring strength, durability, and corrosion resistance.


Bolts differ from screws primarily due to their external threading, which allows them to pass through pre-drilled holes (known as clearance holes) and combine two or more components effectively. Bolts often require nuts and washers for proper installation. Just like screws, they come in various styles like hex bolts, carriage bolts, eye bolts, and countersunk bolts. By choosing the right bolt type, manufacturers can achieve desired load-bearing capacities, resistance to shear forces, and optimal performance in specific applications.


Nuts are integral counterparts to bolts, serving as threaded fasteners that secure components together. Commonly found nut varieties include hex nuts, locknuts, wing nuts, and square nuts. Hex nuts, shaped like six-sided polygons, are the most prevalent and suitable for many industrial applications. Locknuts, on the other hand, employ specialized features such as nylon inserts or flanges to enhance security against loosening caused by vibration or dynamic stresses. Similar to bolts, nuts are available in different materials, including stainless steel, aluminum, and brass.


Washers are small, thin plates with a hole in the center. Placed between the nut and the surface it contacts, washers distribute the load evenly and protect the underlying material from damage caused by excessive pressure or friction. They can be categorized into various types such as flat washers, lock washers, fender washers, and Belleville washers, each serving specific purposes. For instance, split washers, also known as spring washers, create tension to prevent fastener loosening due to external forces.


Unlike screws or bolts, rivets do not require access to both sides of the assembled components for installation. Riveting involves permanently joining two materials using a pin-like metal rod (the rivet) that is inserted through pre-drilled holes and then deformed on one side to form a head, effectively holding the pieces together. This method ensures strong, tamper-proof connections without any exposed threads. Commonly used in aircraft construction and automotive applications, rivets offer exceptional strength, reliability, and corrosion resistance.

Threaded Inserts:

In certain CNC machining applications, threaded inserts provide an effective means of adding threads to materials that may not have sufficient strength or durability. These inserts serve as reinforcement, ensuring secure fastening in situations where direct threading might weaken or damage the component. Threaded inserts can be installed through various methods, including heat insertion, press-in, or screw-in, providing flexibility and versatility in design and manufacturing processes.


As we've explored different types of fasteners commonly used in CNC machining, it becomes evident that each serves a distinct purpose and offers unique advantages. Whether it's screws, bolts, nuts, washers, rivets, or threaded inserts, these essential components play a critical role in maintaining structural integrity, facilitating assembly, and ensuring optimal performance in countless industries and applications. By understanding the characteristics and functionalities of each type, manufacturers can make informed decisions when it comes to selecting the most appropriate fasteners for their specific needs. CNC Milling CNC Machining