P-2, Q-3, R-4, S-1
P-2, Q-1, R-4, S-3
P-2, Q-4, R-3, S-1
P-3, Q-4, R-2, S-1
Class of chip breaker
Clearance angle
Basic shape
Tolerance class
Shot peening
Fullering
Bucking
Hammering
1.6
0.8
3.2
2.3
2 min
10 min
5 min
15 min