Core 40 ± 2 HRC
Surface ≥ 950 HV
Shaft 60 ± 2 HRC
Head 45 ± 5 HRC
JIS TOLERANCES
d
Tolerance
1.0 1.5
-0.005 -0.012
2 to 15
-0.01 -0.02
T
4
0 -0.020
6 to 8
0 -0.030