Metric Thread Calculator - Provides Sizes for machining Metric threads.

Enter Thread Data:

The thread data calculated is for the Internal and External Threads and their tolerances.
The External threads are toleranced around '4g6g', and the Internal threads '6H'.

It is important to note that non-standard sizes, where data does not exist, will be calculated on a best effort.

This calculator can also be used to provide metric information on Inch Series UNC and UNF as these threads have the same geometry as their metric cousins.

As an example a 1/4" - 20 would be entered as M6.35 x 1.27

Metric Thread Data
Major Diameter (M):	M		x Pitch (p):		mm
Desired Pre-Load (N):	N
Coefficient of Friction (µ):	-
		Max	Min
External Thread Data
Major Diameter (MD):	mm
Pitch Diameter (PD):	mm
Minor Diameter (MN):	mm
Tensile Stress Area:	mm²
Stress In the External Thread:	N/mm²
Internal Thread Data
Major Diameter (MD):	mm
Pitch Diameter (PD):	mm
Minor Diameter (MN):	mm
Shear Stress Area (3 x Pitch Contact):	mm²
Shear Stress In the Internal Thread:	N/mm²
Torque to Tighten (Nm):	Nmm

Calculate