攻牙对照表

攻牙径对照表(集合版)

2.2 2.7 3.2 3.5 4 4.5 5 5.3 5.5 6.3 6.5 7 7.3 7.5 8 8.3 8.8 9 9.3 9.5 10 10.3 10.5 10.8 11 11.5 12.5 13 13.5
2.246 2.721 3.221 3.599 4.099 4.599 5.099 5.378 5.55 6.378 6.55 7.153 7.378 7.52 8.153 8.378 8.912 9.153 9.378 9.52 10.153 10.378 10.676 10.912 11.153 11.52 12.676 13.153 13.676
20 20.5 21 22 22.5 23 23 23.5 24 24.5 25 25.5 26 26 26.5 27 27 28 28.5 34.5
20.21 20.676 21.153 22.21 22.676 23.153 23.21 23.676 24.153 24.676 25.21 25.676 26.153 26.21 26.676 27.153 27.252 28.21 28.676 29.153 30.21 30.676 31.21 31.21 31.676 33.676 33.252 34.21 34.676
19.835 20.376 20.917 21.835 22.376 22.917 22.835 23.376 23.917 24.376 24.835 25.376 25.917 25.835 26.376 26.917 26.752 27.835 28.376 28.917 29.835 30.376 30.835 30.835 31.376 33.376 32.752 33.835 34.376
公制细螺纹规格 M1.0*0.2 M1.1*0.2 M1.2*0.2 M1.4*0.2 M1.6*0.2 M1.7*0.2 M1.8*0.2 M2.0*0.25 M2.2*0.25 M2.3*0.25 M2.5*0.35 标准径 0.8 0.9 1 1.2 1.4 1.45 1.6 1.75 1.95 2.05 2.2 2级牙钻孔径最大 0.821 0.921 1.021 1.221 1.421 1.5 1.621 1.785 1.985 2.061 2.221 最小 0.783 0.883 0.983 1.183 1.383 1.46 1.583 1.729 1.929 2.001 2.121 规格 M15*1.0 M16*1.5 M16*1.0 M17*1.5 M17*1.0 M18*2.0 M18*1.5 M18*1.0 M20*2.0 M20*1.5 M20*1.0 标准径 14 14.5 15 15.5 16 16 16.5 17 18 18.5 19 2级牙钻孔径最大 14.153 14.676 15.153 15.676 16.153 16.21 16.676 17.153 18.21 18.676 19.153 最小 13.917 14.376 14.917 15.376 15.917 15.835 16.376 16.917 17.835 18.376 18.917 规格（UNF) (螺丝牙外径） No.1 64(1.854) No.2 56(2.184) No.3 48(2.515) No.4 40(2.845) No.5 40(3.175) No.6 32(3.505) No.8 32(4.166) No.1024(4.826) No.1224(5.486) 2001-4-20

攻牙底孔径对照表

7.912
8.676
螺孔径
NO1 -64 2 -56 3 -48 4 -40 5 -40 6 -32 8 -32 10 -24 12 -24 1/4 -20 5/16 -18 3/8 -16 7/16 -14 1/2 -13 9/16 -12 5/8 -11 3/4 -10 7/8 -9 1 -8
切削丝攻（英制螺纹）
螺丝规格
钻头径
A列
B列
A列
（硬质材）（软质材）直径%
咬合率%
B列
母螺纹
母螺纹
直径% 最大内径% 最小内径%
W 1/8 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 11/8 11/4 13/8 11/2
2.6 3.7 5.1 6.6 8.0 9.4 10.7 12.3 13.7 16.7 19.5 22.4 25.0 28.3 30.5 33.8
攻牙底孔径对照
切削丝攻（公制粗牙）
切削丝攻（美制粗牙 UNC）
挤压丝攻（公制螺纹）
螺丝规格钻头径
2级螺纹底孔径
最小尺寸最大尺寸
M 1.0×0.25
1.1×0.25 1.2×0.25 1.4×0.3 1.6×0.35 1.7×0.35 1.8×0.35 2.0×0.4 2.2×0.45 2.3×0.4 2.5×0.45 2.6×0.45 3.0×0.6 3.0×0.5 3.5×0.6 4.0×0.75 4.0×0.7 4.5×0.75 5.0×0.9 5.0×0.8 5.5×0.9 6.0×1.0 7.0×1.0 8.0×1.25
11/4 -12
2.1 2.4
2.7
2.9 3.5 4.1 4.6 5.5 6.9 8.5 9.9 11.5 12.9 14.5 17.5 20.5 23.2 26.5

标准螺丝攻牙钻孔径对照表【大全】

标准公制螺母攻牙要钻个小于螺纹大径的孔来攻牙。

这个孔的大小就是螺纹小径到螺纹中径。

如何确认孔径大小就要参照对照表啦,一起来看看吧！螺丝攻牙钻孔径对照表- 14 (3.175) 1- 11 30.20 30.472 30.111NO.6 - 32(3.505)2.80 2.895 2.6421-1/4 -11 38.80 39.133 38.771NO.8 - 32(4.166)3.40 3.530 3.3021-1/2 -11 44.70 45.026 44.664NO.10 -24(4.826)3.90 3.962 3.6832- 11 56.50 56.837 56.475NO.12 -24(5.486)4.50 4.597 4.3441/4 - 20 5.10 5.257 4.979英制管螺纹5/16 - 18 6.60 6.731 6.401 PF规格(新规格G) 标准径最大最小3/8 - 16 8.00 8.153 7.7987/16 - 14 9.40 9.550 9.1441/16 -286.70 6.843 6.561 1/2 - 13 10.90 11.023 10.592 1/8- 288.70 8.848 8.566 9/16 - 12 12.20 12.446 11.989 1/4- 1911.70 11.89 11.445 5/8 - 11 13.60 13.868 13.386 3/8- 1915.20 15.395 14.950 3/4 - 10 16.60 16.840 16.3071/2 - 14 19.00 19.172 18.6317/8- 919.60 19.761 19.177中之毋螺牙径1/16 -6.10 6.20 6.244 6.384281/8 -8.10 8.20 8.249 8.388281/4 -10.70 11.00 10.962 11.174193/8 -14.20 14.50 14.448 14.658191/2 -17.60 18.00 17.979 18.263143/4 -23.00 23.50 23.378 23.66314129.00 29.50 29.459 29.822- 111-1/4 -37.50 38.00 37.976 38.339111-1/2 -43.40 44.00 43.869 44.23211254.90 55.50 55.412 55.844- 11美制管螺纹针车用螺纹规格钻孔径规格标准径最大最小N P TN P SSM1/16 - 80 1.25 1.281 1.211使用绞刀时不用绞刀时SM5/64 - 64 1.55 1.593 1.5131/16 -275.946.15 6.35 SM3/32 - 56 1.90 1.936 1.841 1/8- 278.33 8.43 8.74 SM3/32 -100 2.10 2.156 2.081 1/4- 1810.72 11.13 11.13 SM1/8 - 32 2.30 2.393 2.233 3/8- 1814.27 14.27 14.68 SM1/8 - 40 2.50 2.551 2.421 1/2- 1417.48 17.86 18.26 SM1/8 - 44 2.50 2.605 2.485 3/4-1422.63 23.01 23.42 SM1/8 - 48 2.60 2.657 2.5471-11-1/228.58 28.98 29.36 SM9/64 - 32 2.70 2.79 2.6301-1/4 -11-1/237.31 37.69 38.10 SM9/64 - 40 2.90 2.948 2.8181-1/2-11-1/2 43.26 43.66 44.45SM11/64-323.50 3.584 3.4242-11-1/2 55.17 55.58 56.36SM11/64-403.70 3.742 3.612SM3/16 - 24 3.60 3.658 3.498英制螺纹SM3/16 - 28 3.80 3.844 3.684 规格钻孔径SM3/16 - 32 3.90 3.98 3.820 硬材软材SM3/16 - 40 4.05 4.138 4.008 W 1/8- 402.65 2.60 SM7/32 - 32 4.70 4.774 4.614 W 5/32- 323.25 3.20 SM15/64 -28 5.00 5.0554.875 W 3/16- 243.75 3.70 SM1/4 - 24 5.20 5.266 5.086 W 1/4- 205.10 5.00 SM1/4 - 28 5.40 5.452 5.272 W 5/16- 186.60 6.50 SM1/4 - 40 5.60 5.726 5.596 W 3/8- 168.00 7.90 SM9/32 - 20 5.70 5.824 5.634 W 7/16- 149.40 9.30 SM9/32 - 28 6.20 6.256 6.066 W 1/2- 1210.70 10.50 SM5/16 - 18 6.30 6.444 6.254 W 9/16- 1212.30 12.00 SM5/16 - 24 6.80 6.864 6.674W 5/813.70 13.50 SM5/16 - 28 6.90 7.05 6.860 - 11W 3/416.70 16.50 SM11/32 -28 7.70 7.843 7.653 - 10W 7/819.50 19.30 SM3/8 - 18 7.90 8.053 7.843 - 9W 122.40 22.00 SM3/8 - 28 8.50 8.637 8.447 - 825.00 24.00 SM7/16 - 16 9.30 9.44 9.220 W1-1/8- 728.30 28.00 SM7/16 - 28 10.10 10.224 10.034 W1-1/4- 7W 5/166.60 6.50 SM1/2 - 12 10.30 10.42 10.180 - 18W 3/88.00 7.90 SM1/2 - 20 11.30 11.41 11.190 - 16W 7/169.40 9.30 SM1/2 - 28 11.70 11.812 11.622 - 14W 1/210.70 10.50 SM9/16 - 20 12.90 13.018 12.778 - 12W 9/16 12.30 12.00- 12W 5/8- 1113.70 13.50W 3/4- 1016.70 16.50W 7/8- 919.50 19.30W 1- 822.40 22.00W1-1/8- 725.00 24.00W1-1/4- 728.30 28.00公制迫牙丝攻钻孔径美制迫牙丝攻钻孔径规格精度最大最小规格精度最大最小M1.0×0.25 G4 0.92 0.891-64UNCG5 1.76 1.68M1.2×0.25 G4 1.12 1.092-56G4 2.04 1.96M1.4×0.30 G4 1.3 1.263-48G4 2.35 2.250.80 -80UNC M6.0×1.0 G7 5.59 5.491-72G5 1.77 11.7M7.0×1.0 G7 6.59 6.492-64G4 2.06 1.98M8.0×1.25 G7 7.49 7.363-56G4 2.37 2.29M10×1.50 G7 9.34 9.224-48G5 2.68 2.59M10×1.25 G7 9.49 9.355-44G5 2.99 2.9M12×1.75 G8 11.23 11.096-40G5 3.29 3.19M12×1.25 G9 11.5 11.368-36G5 3.91 3.8110 -32 G6 4.53 4.44英制电器螺纹12 -28 G6 5.13 5.03 规格钻孔径1/4" -28 G7 6 5.91 2BA 4.0-4.2 5/16" -24 G7 7.53 7.42 3BA 3.4-3.6 3/8" -24 G7 9.1 8.99 4BA 3.0-3.2 7/16" -20 G8 10.62 10.48 5BA 2.7-2.8 1/2" -20 G8 12.2 12.06 6BA 2.4-2.5扩展资料：攻丝方法：攻丝是用一定的扭矩将丝锥旋入要钻的底孔中加工出内螺纹。

超全螺纹攻牙钻孔直径和滚造直径对照表,值得收藏!

15.376
M17×1.0
16.00
16.153
15.917
M18×2.0
16.00
16.210
15.835
M18×1.5
16.50
16.670
16.376
M18×1.0
17.00
17.153
16.917
M20×2.0
18.00
18.210
17.835
M20×1.5
18.50
18.676
18.376
39.50
39.827
38.964
2 -4-1/2
45.20
45.593
44.679
英制螺纹
规格
钻孔径
硬材
软材
W1/8 - 40
2.65
2.60
W5/32 - 32
3.25
3.20
W3/16 - 24
3.75
3.70
W1/4 - 20
11.938
11.709
9/16 -28
13.20
13.386
13.132
5/8 -24
14.80
14.986
14.732
3/4 -20
17.80
17.958
17.678
7/8 -20
21.00
21.133
20.853
1 -20
24.00
24.308
24.028
美制粗螺纹
规格(UNC)
标准径
1.40
1.421
1.383
M1.7×0.2
1.45
1.500
1.460
M1.8×0.2
1.60

螺丝攻牙孔径对照表

2级牙钻孔径
最大
最小
0.821 0.783
0.921 0.883
1.021 1.221 1.421
0.983 1.183 1.383
1.500 1.460
1.621 1.583 1.785 1.729
1.985 1.929
2.610 2.221 2.246
2.001 2.121 2.186
2.721 2.621
30.00
31.00 31.50 33.50 33.00 34.00 34.50
2级牙钻孔径
最大
最小
11.153 11.520 12.676 13.153 13.676 14.153 14.676 15.153 15.676 16.153 16.210 16.676 17.153 18.210 18.676 19.153 6 23.153 23.210 23.676 24.153 24.676 25.210 25.676 26.153 26.210 26.676 27.153 27.152 28.210 28.676 29.153 30.210
标准径
1.55 1.80 2.10 2.30 2.60
2.80 3.40 3.90 4.50 5.10 6.60 8.00 9.40 10.80 12.20 13.60 16.50 19.50 22.20 25.00 28.20 30.80 34.00 39.50 45.20
2级牙钻孔径
最大
最小
1.582 1.425
1.612 1.474
1.912 1.756
2.197 2.025
2.458 2.271
2.740 2.551
3.022 2.820

公司使用螺丝攻牙孔径对照表

M1.0*0.25 0.86 0.88 M1.1*0.25 0.96 0.98 M1.2*0.25 1.06 1.08 M1.4*0.30 1.24 1.25 M1.6*0.35 1.41 1.43 M1.7*0.35 1.51 1.53 M1.8*0.35 1.61 1.63 M2.0*0.40 1.78 1.80 M2.2*0.45 1.95 1.98 M2.3*0.40 2.08 2.10 M2.5*0.45 2.25 2.28 M2.6*0.45 2.35 2.38 M3.0*0.50 2.73 2.75 M3.5*0.60 3.17 3.20 M4.0*0.70 3.62 3.65 3.69 M5.0*0.80 4.56 4.60 4.64 M6.0*1.00 5.45 5.50 5.55 M7.0*1.00 6.45 6.50 6.55 M8.0*1.25 7.31 7.38 7.44 M10*1.50 9.18 9.25 9.32 M10*1.25 9.31 9.38 9.44 M12*1.75 11.04 11.12 11.21 M12*1.25 11.31 11.38 11.44 注:迫牙丝攻之钻孔径,在上表所列之数值,由于被加工材料之材质,硬度,形状,尺寸等之影响,多少会有所变动,因此于参考上表之同时, 亦精增减若干。
No 1-64(1.854) No 2-56(2.184) No 3-48(2.515) No 4-40(2.845) No 5-40(3.175) No 6-32(3.505) No 8-32(4.166) No 10-24(4.826) No 12-24(5.486) 2001-4-20 5/16 - 18 3/8 - 16 7/16 - 14 1/2 - 13 9/16 - 12 5/8 - 11 3/4 - 10 7/8 - 9 1 - 8 1-1/8 - 7 1-1/4 - 7 1-3/8 - 6 1-1/2 - 6 1-3/4 - 5 2 - 4-1/2

螺纹攻牙-钻孔直径对照表

M4.5*0.5 4.00 4.099 3.959 NO.4-48(2.845) 2.40 2.458 2.271
M5.0*0.5 4.50 4.599 4.459 NO.5-44(3.175) 2.70 2.740 2.551
M5.5*0.5 5.00 5.099 4.959 NO.6-40(3.505) 2.90 3.022 2.820
5/8 - 18
14.50 14.681 14.351
M10*1.0 9.00 9.153 8.917
3/4 - 16
17.50 17.678 17.323
M10*0.75 9.30 9.378 9.188
7/8 - 14
20.50 20.675 20.270
M10*0.5 9.50 8.520 9.400
M7.0*1.0
6.45 6.50
6.55
M8.0*1.25
7.31 7.38
7.44
M10*1.5
9.18 9.25
9.32
M10*1.25
9.31 9.38
9.44
M12*1.75
11.04 11.12 11.21
M12*1.25
11.31 11.38 11.44
美制迫牙丝攻钻孔径
规格 NO. 2-56UNC
7/16 - 20
9.90 10.033 9.729
M9.0*1.0 8.00 8.153 7.917
1/2 - 20
11.50 11.607 11.329
M9.0*0.75 8.30 8.378 8.188
3/16 - 18
12.90 13.081 12.751
M10*1.25 8.80 8.912 8.647

螺丝攻牙钻孔径和滚丝径对照表

螺丝攻牙钻孔径和滚丝径对照表螺丝攻牙钻孔径和滚丝径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.25 0.75 0.785 0.729NO.1-64(1.854) 1.55 1.582 1.425M1.1×0.25 0.85 0.885 0.829NO.2-56(2.184) 1.80 1.871 1.695M1.2×0.25 0.95 0.985 0.985NO.3-48(2.515) 2.10 2.146 1.941M1.4×0.3 1.10 1.142 1.075NO.4-40(2.845) 2.30 2.385 2.157M1.6×0.35 1.25 1.321 1.221NO.5-40(3.175) 2.60 2.697 2.487M1.7×0.35 1.35 1.421 1.321NO.6-32(3.505) 2.80 2.895 2.642M1.8×0.35 1.45 1.521 1.421NO8-32(4.166) 3.40 3.53 3.302M2.0×0.4 1.60 1.679 1.567NO.10-24(4.826) 3.90 3.962 3.683M2.2×0.45 1.75 1.838 1.713NO.12-24(5.486) 4.50 4.597 4.344M2.3×0.4 1.90 1.979 1.867 1/4-20 5.10 5.257 4.979M2.5×0.45 2.10 2.138 2.013 5/16-18 6.60 6.731 6.401M2.6×0.45 2.20 2.238 2.113 3/8-16 8.00 8.153 7.798M3.0×0.5 2.50 2.599 2.459 7/16-14 9.40 9.55 9.144M3.0×0.6 2.40 2.440 2.280 1/2-13 10.80 11.023 10.592M3.5×0.6 2.90 3.010 2.850 9/16-12 12.20 12.446 11.989M4.0×0.7 3.30 3.422 3.242 5/8-11 13.60 12.868 13.386M4.0×0.75 3.25 3.326 3.106 3/4-10 16.50 18.840 16.307M4.5×0.75 3.80 3.878 3.688 7/8-9 19.50 19.761 19.177M5.0×0.8 4.20 4.334 4.134 1 22.2022.606 21.971M5.0×0.9 4.10 4.170 3.930 1-1/8-7 25.00 25.349 24.638M6.0×1.0 5.00 5.153 4.917 1-1/4-7 28.20 28.524 27.813M7.0×1.0 6.00 6.153 5.917 1-3/8-6 30.80 31.115 30.353M8.0×1.25 6.80 6.912 6.647 1-1/2-6 34.00 34.290 33.528M9.0×1.25 7.80 7.912 7.647 1-3/4-5 39.50 39.827 38.964M10×1.5 8.50 8.676 8.376 2-4-1/2 45.20 45.593 44.679M11×1.5 9.50 9.676 9.376M12×1.75 10.30 10.441 10.106M14×2.0 12.00 12.210 11.835M16×2.0 14.00 14.210 13.835M18×2.5 15.50 15.744 15.294M20×2.5 17.50 17.744 17.294M22×2.5 19.50 19.744 19.294M24×3.0 21.00 21.252 20.752M27×3.0 24.00 24.252 23.752M30×3.5 26.50 26.771 26.211螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.2 0.80 0.821 0.783 NO.0-80(1.524) 1.25 1.305 1.182M1.1×0.2 0.90 0.921 0.883 NO.1-72(1.854) 1.55 1.612 1.474M1.2×0.2 1.00 1.021 0.983 NO.2-64(2.184) 1.85 1.912 1.756M1.4×0.2 1.20 1.221 1.183 NO.3-56(2.515) 2.10 2.197 2.025M1.6×0.2 1.40 1.421 1.383 NO.4-48(2.845) 2.40 2.458 2.271M1.7×0.2 1.45 1.500 1.460NO.5-44(3.175) 2.70 2.740 2.551M1.8×0.2 1.60 1.621 1.583NO.6-40(3.505) 2.90 3.022 2.820M2.0×0.25 1.75 1.785 1.729NO.8-36(4.166) 3.50 3.606 3.404M2.2×0.25 1.95 1.985 1.929NO.10-32(4.826) 4.10 4.165 3.963M2.3×0.25 2.05 2.061 2.001NO.12-28(5.846) 4.60 4.724 4.496M2.5×0.35 2.20 2.221 2.121 1/4-28 5.50 5.588 5.360M2.6×0.35 2.20 2.246 2.186 5/16-24 6.90 7.035 6.782M3.0×0.35 2.70 2.721 2.621 3/8-24 8.50 8.636 8.382M3.5×0.35 3.20 3.221 3.121 7/16-20 9.90 10.033 9.729M4.0×0.5 3.50 3.599 3.459 1/2-20 11.50 11.607 11.329M4.5×0.5 4.00 4.099 3.959 9/16-18 12.90 13.081 12.751M5.0×0.5 4.50 4.599 4.459 5/8-18 14.50 14.681 14.351M5.5×0.5 5.00 5.099 4.959 3/4-16 17.50 17.678 17.323M6.0×0.75 5.30 5.378 5.188 7/8-14 20.50 20.675 20.270M6.0×0.5 5.50 5.550 5.400 1-12 23.20 23.571 23.114M7.0×0.75 6.30 6.378 6.188 1-1/8-12 26.50 26.746 26.289M7.0×0.5 6.50 6.550 6.400 1-1/4-1229.50 29.921 29.464M8.0×1.0 7.00 7.153 6.917 1-3/8-12 32.80 33.096 32.639M8.0×0.75 7.30 7.378 7.188 1-1/2-12 36.00 36.271 35.814M8.0×0.5 7.50 7.520 7.400M9.0×1.0 8.00 8.153 7.917M9.0×0.75 8.30 8.378 8.188M10×1.25 8.80 8.912 8.647M10×1.0 9.00 9.153 8.917M10×0.75 9.30 9.378 9.188M10×0.5 9.50 9.520 9.400M11×1.0 10.00 10.153 9.917M11×0.75 10.30 10.378 10.188M12×1.5 10.50 10.676 10.376M12×1.25 10.80 10.912 10.647M12×0.5 11.50 11.520 11.400 M14×1.5 12.50 12.676 12.376 M14×1.0 13.00 13.153 12.917 M15×1.5 13.50 13.676 13.376 M15×1.0 14.00 14.153 13.917 M16×1.5 14.50 14.676 14.376 M16×1.0 15.00 15.153 14.917 M17×1.5 15.50 15.676 15.376 M17×1.0 16.00 16.153 15.917 M18×2.0 16.00 16.210 15.835 M18×1.5 16.50 16.676 16.376 M18×1.0 17.00 17.153 16.917 M20×2.0 18.00 18.210 17.835 M20×1.5 18.50 18.676 18.376 M20×1.0 19.00 19.153 18.917 M22×2.0 20.00 20.210 19.835 M22×1.5 20.50 20.676 20.376 M22×1.0 21.00 21.153 20.917M24×1.5 22.50 22.676 22.376 M24×1.0 23.00 23.153 22.917 M25×2.0 23.00 23.210 22.835 M25×1.5 23.50 23.676 23.376 M25×1.0 24.00 24.153 23.917 M26×1.5 24.50 24.676 24.376 M27×2.0 25.00 25.210 24.835 M27×1.5 25.50 25.676 25.376 M27×1.0 26.00 26.153 25.917 M28×2.0 26.00 26.210 25.835 M28×1.5 26.50 26.676 26.376 M28×1.0 27.00 27.153 26.917 M30×3.0 27.00 27.252 26.752 M30×2.0 28.00 28.210 27.835 M30×1.5 28.50 28.676 28.376 M30×1.0 29.00 29.153 28.917 M32×2.0 30.00 30.210 29.835 M32×1.5 30.50 30.676 30.376M33×3.0 30.00 30.252 29.752M33×2.0 31.00 31.210 30.835M33×1.5 31.50 31.676 31.376M35×1.5 33.50 33.676 33.376M36×3.0 33.00 33.252 32.752M36×2.0 34.00 34.210 33.835M36×1.5 34.50 34.676 34.376螺丝攻牙钻孔径和滚丝径对照表公制挤压丝攻钻孔径美制挤压丝攻钻孔径规格精度等级规格（UNC）精度等级G4-G6 G7-G8 G9 G4-G6 G7-G8 G9M1.0×0.25 0.86 0.88 －NO.2-56UNC 1.94 －－M1.1×0.25 0.96 0.98 －NO.3-48 2.23 －－M1.2×0.25 1.06 1.08 －NO.4-40 2.50 －－M1.4×0.3 1.24 1.25 －NO.5-40 2.83 －－M1.6×0.35 1.41 1.43 －NO.6-32 3.07 －－－M1.8×0.35 1.61 1.63 －NO.10-24 4.24 4.3 －M2.0×0.4 1.78 1.80 －NO.12-24 4.90 4.96 －M2.2×0.45 1.95 1.98 －1/4-20 －5.72 －M2.3×0.4 2.08 2.10 －5/16-18 －7.24 －M2.5×0.45 2.25 2.28 －3/8-16 －8.74 8.81 M2.6×0.45 2.35 2.38 －7/16-14 －10.20 10.30M3.0×0.5 2.73 2.75 －1/2-13 －11.27 11.82M3.5×0.6 3.17 3.20 －NO.2-64UNF 1.97－－M4.0×0.7 3.62 3.65 3.69 NO.3-56 2.27 －－M5.0×0.8 4.56 4.60 4.64 NO.4-48 2.56 －－－M7.0×1.0 6.45 6.50 6.55 NO.6-40 3.16 －－M8.0×1.25 7.31 7.38 7.44 NO.8-36 3.78 －－M10×1.5 9.18 9.25 9.32 NO.10-32 4.394.43 －M10×1.25 9.31 9.38 9.44 NO.12-28 4.99 5.04 －M12×1.75 11.04 11.12 11.21 1/4-28 5.85 5.90 －M12×1.25 11.31 11.38 11.44 5/16-24 7.36 7.41 －3/8-24 －9.00 －7/16-20 －10.48 10.541/2-20 －12.07 12.13美制特细螺纹英制电器螺纹规格标准径2级牙钻孔径规格钻孔径最大最小NO.12-32 4.70 4.826 4.623 2BA 4.0-4.2 1/4 -32 5.60 5.690 5.486 3BA5/16 -32 7.10 7.264 7.087 4BA 3.0-3.2 3/8 -32 8.70 8.865 8.661 5BA 2.7-2.8 7/16 -28 10.20 10.338 10.135 6BA 2.4-2.51/2 -28 11.80 11.938 11.7099/16 -24 13.20 13.386 13.1325/8 -24 14.80 14.986 14.7323/4 -20 17.80 17.958 17.6787/8 -20 21.00 21.133 20.8531 -20 24.00 24.308 24.028螺丝攻牙钻孔径和滚丝径对照表英制螺纹公制螺纹针车用螺纹规格(UNEF) 钻孔径规格滚丝径规格滚丝径硬材软材W 1/8 - 40 2.65 2.60 M3×0.5 2.63-2.60SM1/8-40 2.735-2.688W 5/32 - 32 3.25 3.20 M3.0×0.6 2.56-2.53 SM1/8-44 2.769-2.722W 3/16 - 24 3.75 3.70 M3.5×0.6 3.06-3.03 SM9/64-40 3.128-3.083W 1/4 - 20 5.10 5.00 M4.0×0.7 3.49-3.45 SM11/64-40 3.855-3.805W 5/16 - 18 6.60 6.50 M4.0×0.75 3.45-3.41 SM3/16-32 4.205-4.155W 3/8 - 16 8.00 7.90 M4.5×0.75 3.96-3.92 SM3/16-28 4.143-4.093W 7/16 - 14 9.40 9.30 M5.0×0.8 4.43-4.38 SM7/32-32 5.003-4.955W 1/2 - 12 10.70 10.50 M5.0×0.9 4.36-4.31 SM15/64-28 5.325-5.570W 9/16 - 12 12.30 12.00 M6.0×1.05.30-5.25 SM1/4-40 5.890-5.735W 5/8 - 11 13.70 13.50 M7.0×1.0 6.30-6.25 SM1/4-28 5.721-5.366W 3/4 - 10 16.70 16.50 M8.0×1.0 7.28-7.23 SM9/32-28 6.508-6.648W 7/8 - 9 19.50 19.30 M8.0×1.25 7.12-7.07 SM11/32-28 8.092-8.432W1 - 8 22.40 22.00 SM3/8-288.880-8.015W 1-1/8 - 7 25.00 24.80 SM7/16-28 10.466-10.401W 1 - 1/4 - 7 28.30 28.00 SM7/16-16 10.037-9.967SM1/2-20 11.819-11.749SM9/26-20 13.400-13.425英制管螺纹英制管螺纹美制管螺纹规格标准径钻孔径规格标准径有交牙部之长度（最小）中之毋螺牙内径标准长度（最小）中之毋螺牙内径规格钻孔径最大最小使用绞刀时不用绞刀时NPT NPS 使用绞刀时不用绞刀时PS 1/16 - 28 6.50 6.632 6.490 PT 1/16 - 28 6.10 6.20 6.244 6.384 1/16 - 27 6.10 6.25 6.35PS 1/8 - 28 8.50 8.637 8.495 PT 1/8 - 28 8.10 8.20 8.249 8.388 1/8 - 27 8.33 8.43 8.74PS 1/4 - 19 11.40 11.549 11.341 PT 1/4 - 19 10.70 11.00 10.962 11.174 1/4 - 18 10.72 11.13 11.13PS 3/8 - 19 15.00 15.054 14.846 PT 3/8 - 19 14.20 14.50 14.448 14.658 3/8 - 18 14.27 14.27 14.68PS 1/2 - 14 18.50 18.773 18.489 PT 1/2 - 14 17.60 18.00 17.979 18.263 1/2 - 14 17.48 17.86 18.26PS 3/4 -14 24.00 24.259 23.975 PT 3/4 - 14 23.00 23.50 23.378 23.663 3/4 - 14 22.63 23.01 23.42PS 1 - 11 30.20 30.471 30.111 PT 1- 11 29.00 29.50 29.459 29.822 1 - 11-1/2 28.58 28.98 29.36PS 1-1/4 - 11 38.80 39.132 38.772 PT 1-1/4 - 11 37.50 38.00 37.976 38.3391-1/4-11-1/2 37.31 37.69 38.10PS 1-1/2 - 11 44.80 45.025 44.665 PT 1-1/2 - 11 43.40 44.00 43.869 44.2321-1/2-11-1/2 43.66 44.04 44.45PS 2 - 11 56.50 56.836 56.476 PT 2 - 11 54.90 55.50 55.412 55.844 2 - 11 - 1/2 55.58 55.96 56.36。

管螺纹与普通螺纹攻牙孔径对照表

20.00 30.00 34.00 34.00
4
109.00
108.00 107.10 108.90 61.00 114.40 112.50 54.00 37.00
5
135.00 133.90 135.90 64.00 141.40 139.40 56.00 38.00
6
162.00 160.50 162.70 67.00 168.40 166.20 59.00 42.00
36
34.50 34.00 33.00 32.00
38 36.50
42
48
39
45
40
37.50 38.50 40.50 43.50 46.50
37.00 (38.00) 40.00 43.00 46.00
36.00 (37.00) 39.00 42.00 45.00
35.00
(38.00) (41.00) (44.00) 37.50 40.50
1.00 0.95
1.20 1.40 1.10
1.25
第一系列第二系列第三系列
1.60 1.45
1.75 1.95 1.60
1.75
粗牙螺距细牙螺距
2.15 2.05
2.15 2.65
2.50
3.50 (2.90)
3.30
4.00 4.50
(3.70) 4.20
尽可能不用
注: 1、螺距最大的为粗牙螺距，其余螺距均为细牙螺距； 2、直径优先选用第一系列，其次第二系列，第三系列尽可能不用； 3、括号内的底孔直径对应的螺距尽可能不用； 4、M14x1.25仅用于火花塞，M35x1.5仅用于滚动轴承锁紧螺母； 5、对直径150~400的螺纹，需要使用螺距大于6mm的螺纹时，应优先选用8mm的螺距。

螺丝攻牙钻孔径和滚丝径对照表

螺丝攻牙钻孔径和滚丝径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻孔径规格(UNC)标准径2级牙钻孔径M1.0 M1.1 M1.2 M1.4 M1.6 M1.7 M1.8 M2.0 M2.2 M2.3 M2.5 M2.6 M3.0 M3.0 M3.5 M4.0 M4.0 M4.5 M5.0 M5.0 M6.0 M7.0最h< 取小i 0.785 0.729 NO.1-64(1.854) 1.55 1.582 1.425i 0.885 0.829 NO.2-56(2.184) 1.80 1.871 1.695i 0.985 0.985 NO.3-48(2.515)2.10 2.146 1.9411.142 1.075 NO.4-40(2.845) 2.30 2.385 2.157i 1.321 1.221 NO.5-40(3.175) 2.60 2.697 2.487i 1.421 1.321 NO.6-32(3.505) 2.80 2.895 2.642i 1.521 1.421 NO8-32(4.166) 3.40 3.53 3.3021.679 1.567 NO.10-24(4.826) 3.90 3.962 3.683i 1.838 1.713 NO.12-24(5.486) 4.50 4.597 4.3441.979 1.867 1/4-20 5.10 5.257 4.979I 2.138 2.013 5/16-18 6.60 6.731 6.401I 2.238 2.113 3/8-16 8.00 8.153 7.7982.599 2.459 ?16-14 9.40 9.55 9.1442.440 2.280 1/2-13 10.80 11.023 10.5923.010 2.850 9/16-12 12.20 12.446 11.9893.422 3.242 ^8-11 13.60 12.868 13.386i 3.326 3.106 ^4-10 16.50 18.840 16.307I 3.878 3.688 778-9 19.50 19.761 19.1774.334 4.134 1 22.20 22.606 21.9714.170 3.930 1-1/8-7 25.00 25.349 24.6385.153 4.917 1-1/4-7 28.20 28.524 27.8136.153 5.917 1-3/8-6 30.80 31.115 30.3530.25 0.750.25 0.850.25 0.950.5 2.500.6 2.400.6 2.900.7 3.300.8 4.200.9 4.101.0 5.001.0 6.000.3 1.100.35 1.250.35 1.350.35 1.450.4 1.600.45 1.750.4 1.900.45 2.100.45 2.200.75 3.250.75 3.80M8.0 X 1.25 6.80 6.912 6.647 1-1/2-6 34.00 34.290 33.528M9.0 X 1.25 7.80 7.912 7.647 1-3/4-5 39.50 39.827 38.964M10X 1.5 8.50 8.676 8.376 2-4-1/2 45.20 45.593 44.679M11X 1.5 9.50 9.676 9.376M12X 1.75 10.30 10.441 10.106M14X 2.0 12.00 12.210 11.835M16X 2.0 14.00 14.210 13.835M18X 2.5 15.50 15.744 15.294M20X 2.5 17.50 17.744 17.294M22X 2.5 19.50 19.744 19.294M24X 3.0 21.00 21.252 20.752M27X 3.0 24.00 24.252 23.752M30X 3.5 26.50 26.771 26.211螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格(UNC)标准径2级牙钻孔径最大最小最大最小M1.0 X 0.2 0.80 0.821 0.783 N0.0-80(1.524) 1.25 1.3051.182M1.1 X 0.2 0.90 0.921 0.883 NO.1-72(1.854) 1.55 1.6121.474M1.2 X 0.2 1.00 1.021 0.983 NO.2-64(2.184) 1.85 1.9121.756M1.4 X 0.2 1.20 1.221 1.183 NO.3-56(2.515) 2.10 2.1972.025M1.6 X 0.2 1.40 1.421 1.383 NO.4-48(2.845) 2.40 2.4582.271M1.7 X 0.2 1.45 1.500 1.460 NO.5-44(3.175) 2.70 2.740 2.551 M1.8 X 0.2 1.60 1.621 1.583 N0.6-40(3.505) 2.90 3.022 2.820 M2.0 X 0.25 1.75 1.785 1.729 NO.8-36(4.166)3.50 3.606 3.404M2.2 X 0.25 1.95 1.985 1.929 NO.10-32件826) 4.10 4.165 3.963M2.3 X 0.25 2.05 2.061 2.001 NO.12-28(5.846) 4.60 4.724 4.496 M2.5 X 0.35 2.20 2.221 2.121 1/4-28 5.50 5.588 5.360M2.6 X 0.35 2.20 2.246 2.186 5/16-24 6.90 7.035 6.782M3.0 X 0.35 2.70 2.721 2.621 38-24 8.50 8.636 8.382M3.5 X 0.35 3.20 3.221 3.121 7716-20 9.90 10.033 9.729M4.0 X 0.5 3.50 3.599 3.459 1/2-20 11.50 11.607 11.329M4.5 X 0.5 4.00 4.099 3.959 9/16-18 12.90 13.081 12.751M5.0 X 0.5 4.50 4.599 4.459 ^8-18 14.50 14.681 14.351M5.5 X 0.5 5.00 5.099 4.959 34-16 17.50 17.678 17.323M6.0 X 0.75 5.30 5.378 5.188 778-14 20.50 20.675 20.270M6.0 X 0.5 5.50 5.550 5.400 1-12 23.20 23.571 23.114M7.0 X 0.75 6.30 6.378 6.188 1-1/8-12 26.50 26.746 26.289M7.0 X 0.5 6.50 6.550 6.400 1-1/4-12 29.50 29.921 29.464M8.0 X 1.0 7.00 7.153 6.917 1-3/8-12 32.80 33.096 32.639M8.0 X 0.75 7.30 7.378 7.188 1-1/2-12 36.00 36.271 35.814M8.0 X 0.5 7.50 7.520 7.400M9.0 X 1.0 8.00 8.153 7.917M9.0 X 0.75 8.30 8.378 8.188M10X 1.25 8.80 8.912 8.647M10X 1.0 9.00 9.153 8.917M10X 0.75 9.30 9.378 9.188M10X 0.5 9.50 9.520 9.400M11X 1.0 10.00 10.153 9.917M11X 0.75 10.30 10.378 10.188M12X 1.5 10.50 10.676 10.376M12X 1.25 10.80 10.912 10.647M12X 1.0 11.00 11.153 10.917 M12X 0.5 11.50 11.520 11.400M14X 1.5 12.50 12.676 12.376 M14X 1.0 13.00 13.153 12.917 M15X 1.5 13.50 13.676 13.376 M15X 1.0 14.00 14.153 13.917 M16X 1.5 14.50 14.676 14.376 M16X 1.0 15.00 15.153 14.917 M17X 1.5 15.50 15.676 15.376 M17X 1.0 16.00 16.153 15.917 M18X 2.0 16.00 16.210 15.835 M18X 1.5 16.50 16.676 16.376 M18X 1.0 17.00 17.153 16.917 M20X 2.0 18.00 18.210 17.835 M20X 1.5 18.50 18.676 18.376 M20X 1.0 19.00 19.153 18.917 M22X 2.0 20.00 20.210 19.835M22X 1.5 20.50 20.676 20.376 M22X 1.0 21.00 21.153 20.917M24X 2.0 22.00 22.210 21.835M24X 1.5 22.50 22.676 22.376 M24X 1.0 23.00 23.153 22.917M25X 2.0 23.00 23.210 22.835 M25X 1.5 23.50 23.676 23.376 M25X 1.0 24.00 24.153 23.917 M26X 1.5 24.50 24.676 24.376M27X 2.0 25.00 25.210 24.835M27X 1.5 25.50 25.676 25.376M27X 1.0 26.00 26.153 25.917M28X 2.0 26.00 26.210 25.835M28X 1.5 26.50 26.676 26.376M28X 1.0 27.00 27.153 26.917M30X 3.0 27.00 27.252 26.752M30X 2.0 28.00 28.210 27.835M30X 1.5 28.50 28.676 28.376M30X 1.0 29.00 29.153 28.917M32X 2.0 30.00 30.210 29.835M32X 1.5 30.50 30.676 30.376M33X 3.0 30.00 30.252 29.752M33X 2.0 31.00 31.210 30.835M33X 1.5 31.50 31.676 31.376M35X 1.5 33.50 33.676 33.376M36X 3.0 33.00 33.252 32.752M36X 2.0 34.00 34.210 33.835M36X 1.5 34.50 34.676 34.376螺丝攻牙钻孔径和滚丝径对照表公制挤压丝攻钻孔径美制挤压丝攻钻孔径规格精度等级规格(UNC)精度等级G4-G6 G7-G8 G9 G4-G6 G7-G8 G9M1.0 X 0.25 0.86 0.88 — NO.2-56UNC 1.94M1.1 X 0.25 0.96 0.98 — NO.3-48 2.23 —M1.2 M1.4 M1.6 M1.7 M1.8 M2.0 M2.2 M2.3 M2.5 M2.6 M3.0 M3.5 M4.0 M5.0 M6.0 M7.0 M8.0 M10 M10 M12 M12 0.25 1.06 1.08 — NO.4-40 2.50 ——0.3 1.24 1.25 —NO.5-40 2.83 ——0.35 1.41 1.43 —NO.6-32 3.07 ——0.35 1.51 1.53 —NO.8-32 3.73 3.77 —0.35 1.61 1.63 —NO.10-24 4.24 4.3 —0.4 1.78 1.80 —NO.12-24 4.90 4.96 —0.45 1.95 1.98 —1/4-20 — 5.72 —0.4 2.08 2.10 —5^16-18 — 7.24 —0.45 2.25 2.28 —^8-16 — 8.74 8.810.45 2.35 2.38 —7716-14 — 10.20 10.30 0.5 2.73 2.75 —1/2-13 — 11.27 11.82 0.6 3.17 3.20 —NO.2-64UNF 1.97 ——0.7 3.62 3.65 3.69 NO.3-56 2.27 ——0.8 4.56 4.60 4.64 NO.4-48 2.56 ——1.0 5.45 5.50 5.55 NO.5-442.86 ——1.0 6.45 6.50 6.55 NO.6-40 3.16 ——1.25 7.31 7.38 7.44 NO.8-36 3.78 ——1.5 9.18 9.25 9.32 NO.10-32 4.39 4.43 —1.25 9.31 9.38 9.44 NO.12-28 4.99 5.04 —5.901.75 11.04 11.12 11.21 1/4-28 5.851.25 11.31 11.38 11.44 5/16-24 7.36 7.4138-24 9.00力6-20 10.48 10.541/2-20 12.07 12.13美制特细螺纹英制电器螺纹规格标准径2级牙钻孔径规格钻孔径最大最小NO.12-32 4.70 4.826 4.623 2BA 4.0-4.21/4 -32 5.60 5.690 5.486 3BA06 -32 7.10 7.264 7.087 4BA 3.0-3.238 -32 8.70 8.865 8.661 5BA 27-2.87716 -28 10.20 10.338 10.135 6BA2.4-2.51/2 -28 11.80 11.938 11.7099/16 -24 13.20 13.386 13.13238 -24 14.80 14.986 14.73234 -20 17.80 17.958 17.678778 -20 21.00 21.133 20.8531 -20 24.00 24.308 24.028螺丝攻牙钻孔径和滚丝径对照表英制螺纹公制螺纹针车用螺纹规格(UNEF)钻孔径规格滚丝径规格滚丝径硬材软材W 1/8 -40 2.65 2.60 M3X 0.5 2.63-2.60 SM78-40 2.735-2.688W ®32 - 32 3.25 3.20 M3.0 X 0.6 2.56-2.53 SM&44 2.769-2.722W3/16 -24 3.75 3.70 M3.5 X 0.6 3.06-3.03 SM904-4O 3.128-3.083 W 1/4 - 20 5.10 5.00 M4.0 X 0.7 3.49-3.45 SM1/B4-40 3.855-3.805 W^16- 18 6.60 6.50 M4.0 X 0.75 3.45-3.41 SIVK36-32 4.205-4.155 W3/8- 16 8.00 7.90 M4.5 X 0.75 3.96-3.92 SM36-28 4.143-4.093W 7716- 14 9.40 9.30 M5.0 X 0.8 4.43-4.38 SIWB2-32 5.003-4.955W 1/2 - 12 10.70 10.50 M5.0 X 0.9 4.36-4.31 SM1/54-28 5.325-5.570W1 - 8 22.40 22.00 SM3/8-28 8.880-8.015W 1-1/8 - 7 25.00 24.80 W 1 - 1/4 - 7 28.30 28.00SM7/16-28 10.466-10.401 SM7/16-16 10.037-9.967SM1/2-20 11.819-11.749 SM9/26-20 13.400-13.425英制管螺纹英制管螺纹美制管螺纹规格标准径钻孔径规格标准径有交牙部之长度（最小）中之毋螺牙内径标准长度（最小）中之毋螺牙内径规格钻孔径最大最小使用绞刀时不用绞刀时 NPT NPS 使用绞刀时不用绞刀时PS 1/16 - 28 6.50 6.632 6.490 PT 1/16 - 28 6.10 6.20 6.244 6.384 1/16 - 27 6.10 6.25 6.35 PS 1/8 - 28 8.508.637 8.495 PT 1/8 - 28 8.108.20 8.249 8.388 1/8 - 27 8.338.438.74PS 1/4 - 19 11.40 11.549 11.341 PT 1/4 - 19 10.70 11.00 10.962 11.174 1/4 - 18 10.72 11.13 11.13 PS 3/8-19 15.00 15.054 14.846PT 3/8 - 19 14.20 14.5014.448 14.658 3/8 - 18 14.27 14.27 14.68 PS 1/2 -14 18.50 18.773 18.489 PT 1/2 - 14 17.60 18.00 17.979 18.263 1/2 - 14 17.48 17.8618.26PS 3/4 -14 24.00 24.259 23.975 PT 3/4 - 14 23.0023.50 23.378 23.663 3/4 - 14 22.6323.01 23.42PS 1 - 11 30.20 30.471 30.111 PT 1- 11 29.00 29.50 29.459 29.822 1 - 11-1/2 28.58 28.9829.36PS 1-1/4 - 11 38.80 39.132 38.772 PT 1-1/4 - 11 37.50 38.0037.976 38.339 1-1/4-11-1/2 37.31 37.6938.10 PS 1-1/2 - 11 44.80 45.025 44.665 PT 1-1/2 - 11 43.40 44.00 43.869 44.232 1-1/2-11-1/2 43.6644.0444.45PS 2 - 11 56.50 56.836 56.476 PT 2 - 11 54.9055.5055.412 55.844 2 - 11 - 1/2 55.5855.96 56.36W 9/16 - 12 12.30 12.00 M6.0 X 1.0 5.30-5.25 SM/4-40 5.890-5.735 W 5/8 - 11 13.70 13.50 M7.0X 1.0 6.30-6.25 SM/14-28 5.721-5.366 W 3/4 - 10 16.70 16.50 M8.0X 1.0 7.28-7.23 SM93/2-28 6.508-6.648 W 7/8 - 9 19.50 19.30 M8.0X 1.25 7.12-7.07 SM1/132-28 8.092-8.432。

标准孔径
丝攻规格
M11*0.75 M12*1.5 M12*1.25 M12*1.0 M12*0.5 M14*1.5 M14*1.0 M15*1.5 M15*1.0 M16*1.5 M16*1.0 M17*1.5 M17*1.0 M18*2.0 M18*1.5 M18*1.0 M20*2.0 M20*1.5 M20*1.0 M22*2.0 M22*1.5
M30*1.0 M32*2.0 M32*1.5 M33*3.0 M33*2.0 M33*1.5 M35*1.5 M36*3.0 M36*2.0 M36*1.5
29 30 30.5 30 31 31.5 33.5 33 34 34.5
以上攻牙对照表,是理论上的标准孔径,我们在实际作业过程中要根据材料的硬度和材质而适当的做一些孔径的变动是可行的.以上只是参考,不要太死板的去处理一些事情.
螺丝攻牙钻孔孔径对照表
公制细螺牙
0.8 0.9 1 1.2 1.4 1.45 1.6 1.75 1.95 2.05 2.2 2.2 2.7 3.2 3.5 4 4.5 5 5.3 5.5 6.3
英制PT管螺牙
标准孔径
6.2-6.5 8.2-8.5 11-11.4 14.5-15 18-18.5 23.5-24 29.5-30.2 38-38.8 44-44.8 55.5-56.5 1/16 1/8 1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2
标准孔径
丝攻规格
M1.0*0.2 M1.1*0.2 M1.2*0.2 M1.4*0.2 M1.6*0.2 M1.7*0.2 M1.8*0.2 M2.0*0.25 M2.2*0.25 M2.3*0.25 M2.5*0.35 M2.6*0.35 M3.0*0.35 M3.5*0.35 M4.0*0.5 M4.5*0.5 M5.0*0.5 M5.5*0.5 M6.0*0.75 M6.0*0.5 M7.0*0.75

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