Metric thread calculator.
Contact e-mail: info@yktechinfo.com
Reference data.
⌀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.