Lead angle


Lead is the axial advance of a helix or screw during one complete turn (360°). The lead for a screw thread is the axial travel for a single revolution. Pitch is defined as the axial distance between adjacent threads on a helix or screw.
Lead angle is the angle between the helix and a plane of rotation.

Related formulas


LaLead angle (rad)
lLead of the helix (cm)
dmMean diameter of the helix (cm)