BS ISO 2901:2016

What is ISO 2901 - ISO metric trapezoidal screw threads about?  

ISO 2901 is an international standard on trapezoidal screw threads that discusses the dimensions, design profiles of ISO metric trapezoidal screw threads. 

ISO 2901 specifies the basic and design profiles of ISO metric trapezoidal screw threads. 

ISO 2901 is chiefly applicable to traversing threads for traversing motion on machines, tools, etc. It can also be used for fastening threads. 

Who is ISO 2901 - ISO metric trapezoidal screw threads for?  

ISO 2901 on ISO metric trapezoidal screw threads is relevant to: 

• Manufacturer of ISO metric trapezoidal screw threads  

Why should you use ISO 2901 - ISO metric trapezoidal screw threads? 

Trapezoidal thread forms are screw thread profiles with trapezoidal outlines. They are the most common forms used for lead screws (power screws). They offer high strength and ease of manufacture. They are typically found where large loads are required, as in a vice or the leadscrew of a lathe. 

ISO 2901 provides guidance on basic profile dimensions, design profiles.  

As a user of ISO 2901, you can be ensured of dimensions of ISO metric trapezoidal screw threads.  

ISO 2901 exemplifies the required dimensions and design profiles that help you achieve precision in terms of product functionality and specification. 

What’s changed since the last update? 

BS ISO 2901:2016 with BS ISO 2902:2016, BS ISO 2903:2016, BS ISO 2904:2020 and BS ISO 965‑1:2013, it supersedes BS 5346:1976, which is withdrawn. 

The following changes have been made: 

• The phrase “maximum material profiles” has been replaced by “design profiles”
• The reference ISO 2903 has been replaced by ISO 5408
• The symbols have been updated
• The definition of the basic profile has been deleted
• Figure 2 has been revised and figure 3 has been deleted