Lead is twice the pitch
Lead is half the pitch
Lead is equal to pitch
Lead is 1/4 pitch
0.025"
0.038"
0.049"
0.082"
Driver 45 teeth, Driven 60 teeth
Driver 60 teeth, Driven 50 teeth
Driver 30 teeth, Driven 70 teeth
Driver 50 teeth, Driven 100 teeth
For easy alignment
For quick transmission
For easy engagement
For general fastening
21 mm
21.5 mm
22.5 mm
24 mm
