直柄手用铰刀直柄机用铰刀和锥柄机用铰刀都有精度等级老标有D级D4级D5级新标有H7级H8级H9级；老标切削刃短造价便宜新标切削刃长价格较贵老标D级精度高新标H7级精度高
附表 高速钢机用铰刀直径公差（GB1133－84） (mm)
铰刀直径
直径极限偏差

H7级精度铰刀
H8级精度铰刀
H9级精度铰刀

＞5.3～6
+0.010
+0.005
+0.015
+0.008
+0.025
+0.014

＞6～10
+0.012
+0.006
+0.018
+0.010
+0.030
+0.017

＞10～18
+0.015
+0.008
+0.022
+0.012
+0.036
+0.020

＞18～30
+0.017
+0.009
+0.028
+0.016
+0.044
+0.025

＞30～50
+0.021
+0.012
+0.033
+0.019
+0.052
+0.030

＞50～80
+0.025
+0.014
+0.039
+0.022
+0.062
+0.036

＞80～100
+0.029
+0.016
+0.045
+0.026
+0.073
+0.042
硬质合金机用铰刀直径公差 (mm)
铰刀直径
直径极限偏差

H7级精度铰刀
H8级精度铰刀
H9级精度铰刀

＞5.3～6
+0.012
+0.007
+0.018
+0.001
+0.030
+0.019

＞6～10
+0.015
+0.009
+0.022
+0.014
+0.036
+0.023

＞10～18
+0.018
+0.011
+0.027
+0.017
+0.043
+0.027

＞18～30
+0.021
+0.013
+0.033
+0.021
+0.052
+0.033

＞30～40
+0.025
+0.016
+0.039
+0.025
+0.062
+0.040