Thread engagement turns

Calculates required thread engagement from axial force, allowable shear stress, and effective shear perimeter.

Calculates turns for a given thread length and lead.

Calculates approximate thread depth from a pitch multiplier; it is not a standards-based inspection dimension.

Calculates simplified thread cutting time from thread length, approach length, and feed rate.

Calculates helix angle from lead and pitch diameter.

Calculates thread lead from pitch and user-supplied number of starts.