Normal length of thread engagement  Calculator (ISO 965-1)
Blocks shown as light blue are editable
Pitch P = mm
Basic Major Diameter d = mm
Calculated Results 
Eq. 3 Threads per mm tm = thrds / mm
Eq. 1 Normal LE min = mm
Eq. 1 Rounded Normal LE min = mm
Eq. 2 Normal LE max. = mm
Eq. 2 Rounded Normal LE max. = mm