4.5 mm

9.0 mm

18 mm

42 mm

32.98 mm

33.00 mm

36.49 mm

36.50 mm

46.64 mm

51.26 mm

51.88 mm

51.00 mm

3

4

12

18

DR/DN = Leads of screw to be cut X No. Of threads per inch of lead screw

DR/DN = TPI on lead screw/ TPI to cut

DR/DN = Lead of head screw/ Lead of work

DR/DN = Lead of work/ No. Of threads per inch