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Main page / Programs / [ Metric thread calculator ]
Metric thread calculator.

Contact e-mail: info@yktechinfo.com

 Input parameters 




    

 Output parameters 
 External thread 





        
 Internal thread 



 Other thread parameters 



Reference data.

metric thread profile

metric thread profile


⌀D - Major diameter internal thread (nut).
⌀D1 - Minor diameter internal thread (nut). Despite its name, this parameter is not equal to the diameter of the hole of the nut blank before threading.
⌀D2 - Pitch diameter internal thread (nut).

⌀d - Major diameter external thread (bolt). Despite its name, this parameter is not equal to the diameter of the bolt blank before threading.
⌀d1 - Minor diameter external thread (bolt).
⌀d2 - Pitch diameter external thread (bolt).
⌀d3 - Rounded form minor diameter external thread (bolt).

P - Pitch.
H - Height of fundamental triangle.

Minor diameter internal thread (nut):

Pitch diameter internal thread (nut):

Minor diameter external thread (bolt):

Pitch diameter external thread (bolt):

Rounded form minor diameter external thread (bolt):

Height of fundamental triangle:

Thread overlap:

Height of thread:

Root radius: