How To Calculate Minor Diameter Of Thread

Calculate Thread Minor Diameter



Introduction & Importance

Calculating the minor diameter of a thread is crucial in engineering and manufacturing. It ensures proper fit and function of threaded components…

How to Use This Calculator

  1. Enter the pitch of the thread in millimeters.
  2. Enter the number of threads per inch.
  3. Click ‘Calculate’.

Formula & Methodology

The formula for calculating the minor diameter (d) is:

d = P * (1 – √(n / (n * 3.14159)))

where P is the pitch and n is the threads per inch.

Real-World Examples

Example 1: A thread with a pitch of 1.25mm and 6 threads per inch has a minor diameter of 1.07mm…

Data & Statistics

Pitch (mm)Threads per inchMinor Diameter (mm)
1.2561.07
1.581.28

Expert Tips

  • Always use the correct pitch and threads per inch for your application.
  • Consider the material and load when selecting a thread.

Interactive FAQ

What is the difference between major and minor diameter?

The major diameter is the largest diameter of a thread, while the minor diameter is the smallest.

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