Thread Calculator

Basic geometry of a symmetric 60° thread. No tolerance class, allowance, crest/root manufacturing details or measurement corrections; not a machining approval or strength calculation.

Your workbenchInputs are not stored

Result

Enter your values and run the tool to see your result.

How to use this tool

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

Calculation method

Basic pitch diameterdiameter-3*sqrt(3)*pitch/8

Basic internal minor diameterdiameter-5*sqrt(3)*pitch/8

Fundamental triangle heightsqrt(3)*pitch/2

Leadpitch*starts

References

https://www.iai-automation.com/files/content/downloads/brochures/IAI-General-Catalog-2021_Technical-Reference_04.22_eng.pdf