Cut Thread vs Rolled Thread Fasteners

Date Posted:

July 22, 2017

Post Author:

Marsh Fasteners

Last Updated on July 1, 2020 by Marsh Fasteners

If you are working with fasteners, it is a good idea to understand the difference between cut thread fasteners and rolled thread fasteners. Threads play a vital role in many fastener types including bent bolts, rods, headed bolts, and much more. To understand the difference between the two types of threads, you simply need to know a little more about each type of thread.

Cut Thread Fasteners – How the Thread Is Achieved

Cut thread fasteners involve working with a round bar of steel. The material is removed by means of a cutting process to form threads.  Full one diameter body and one diameter threading can be achieved with cut threading.  This process creates tiny tears in the fastener, possibly resulting in the fastener losing its stability and strength over time.

Rolled Thread Fasteners – How the Thread Is Achieved

During this process, a hardened steel die is lodged between the diameters of the finished thread. This die creates a new thread in the blank space. This thread roots outward to create what is called crests. Generally speaking, a rolled thread fastener will have a smaller body. The body of the fastener is reduced while the threading diameter is maintained.

A fastener’s strength is determined mainly by its threading and not by its body size. So, while these types of fasteners are often thought to lack in strength when compared to other fastener types, they don’t.  Their strength is directly related to their thread! You will often find that rolled thread bolts are cheaper than other options too.

Buy a range of top-quality cut thread and rolled thread fasteners at Marsh Fasteners. Chat to our team about ensuring that your fasteners are the correct selection for your application. Contact us via email or telephone at Marsh Fasteners today.