8.5 mm

9.75 mm

10.00 mm

10.25 mm

Feed ratio is more

Cooling is in effective

Insufficient clearance angle

Unequal length of cutting edge

75 Degree

80 Degree

90 Degree

120 Degree

To tighten the die

To adjust the depth of cut

To adjust the dia of internal thread

To adjust the dia of external thread

45 Degree

29 Degree

60 Degree

47.5 Degree