Z = d/m = (Da +2*m)/m

Tooth number

Note

m = p/z = d/z

Module

Da = m * Z

Outside Diameter

Df = m -2(m+0.167)

Root Diameter

Do = m * Z

Pitck Diameter

Db

Bore Diameter

H = 2* m+0.2

High Tooth

P = Ω * m

Pitch