常用螺纹尺寸及公差汇总表.doc

1、公制螺纹基本直径 内螺纹公差等级 外螺纹公差6H 7H 6g大径 中径 小径中径公差小径公差中径公0,差小径公差 中径公差 小径公差M10*1 10 9.35 8.917 0,+0.150 0,+0.236 0,+0.190 0,+0.300 -0.026,-0.138 -0.026,0.206M12*1 12 11.35 10.917 0,+0.160 0,+0.236 0,+0.200 0,+0.300 -0.026,-0.144 -0.026,0.206M14*1 14 13.35 122.917 0,+0.160 0,+0.236 0,+0.200 0,+0.300 -0.026,-0

2、.144 -0.026,0.206M12*1.25 12 11.188 10.647 0,+0.180 0,+0.265 0,+0.224 0,+0.335 -0.028,-0.160 -0.028,-0.240M14*1.25 14 13.188 12.647 0,+0.180 0,+0.265 0,+0.224 0,+0.335 -0.028,-0.160 -0.028,-0.240M12*1.5 12 11.026 10.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 -0.032,-0.268M14*1.5 14 13.026

3、 12.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 -0.032,-0.268M16*1.5 16 15.026 14.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 -0.032,-0.268M18*1.5 18 17.026 16.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 -0.032,-0.268M20*1.5 20 19.026 18.376 0,+0.190 0,+0.300 0,+0.236 0

4、,+0.375 -0.032,-0.172 -0.032,-0.268M22*1.5 22 21.026 20.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 -0.032,-0.268M24*1.5 14 23.026 22.376 0,+0.200 0,+0.300 0,+0.250 0,+0.375 -0.032,-0.182 -0.032,-0.268M26*1.5 26 25.026 24.376 0,+0.200 0,+0.300 0,+0.250 0,+0.375 -0.032,-0.182 -0.032,-0.268M

5、27*1.5 27 26.026 25.376 0,+0.200 0,+0.300 0,+0.250 0,+0.375 -0.032,-0.182 -0.032,-0.268M30*1.5 30 29.026 28.376 0,+0.200 0,+0.300 0,+0.250 0,+0.375 -0.032,-0.182 -0.032,-0.268M33*1.5 33 32.026 31.376 0,+0.200 0,+0.300 0,+0.250 0,+0.375 -0.032,-0.182 -0.032,-0.268M36*1.5 36 35.026 34.376 0,+0.200 0,+

6、0.300 0,+0.250 0,+0.375 -0.032,-0.182 -0.032,-0.268M39*1.5 39 38.026 37.376 0,+0.200 0,+0.300 0,+0.250 0,+0.375 -0.032,-0.182 -0.032,-0.268M42*1.5 42 41.026 40.376 0,+0.200 0,+0.300 0,+0.250 0,+0.375 -0.032,-0.182 -0.032,-0.268M27*2 27 25.701 24.835 0,+0.224 0,+0.375 0,+0.280 0,+0.475 -0.038,-0.208

7、-0.038,-0.318M30*2 30 28.701 27.835 0,+0.224 0,+0.375 0,+0.280 0,+0.475 -0.038,-0.208 -0.038,-0.318M33*2 33 31.701 30.835 0,+0.224 0,+0.375 0,+0.280 0,+0.475 -0.038,-0.208 -0.038,-0.318M36*2 36 34.701 33.835 0,+0.224 0,+0.375 0,+0.280 0,+0.475 -0.038,-0.208 -0.038,-0.318M39*2 39 37.701 36.835 0,+0.2

8、24 0,+0.375 0,+0.280 0,+0.475 -0.038,-0.208 -0.038,-0.318M42*2 42 40.701 39.835 0,+0.224 0,+0.375 0,+0.280 0,+0.475 -0.038,-0.208 -0.038,-0.318M45*2 45 43.701 42.835 0,+0.224 0,+0.375 0,+0.280 0,+0.475 -0.038,-0.208 -0.038,-0.318M52*2 52 50.701 49.835 0,+0.236 0,+0.375 0,+0.300 0,+0.475 -0.038,-0.21

9、8 -0.038,-0.318M60*2 60 58.701 57.835 0,+0.236 0,+0.375 0,+0.300 0,+0.475 -0.038,-0.218 -0.038,-0.318M64*2 64 62.701 61.835 0,+0.236 0,+0.375 0,+0.300 0,+0.475 -0.038,-0.218 -0.038,-0.318M72*2 72 70.701 69.835 0,+0.236 0,+0.375 0,+0.300 0,+0.475 -0.038,-0.218 -0.038,-0.318美制NPSM螺纹（美国标准ANSI B1.20.1机械

10、连接用直管螺纹60度）外螺纹（ 2A级） 内螺纹（ 2B级）大径 中径 小径 中径标号 螺纹代号最大值 最小值 最大值 最小值 最小值 最大值 最小值 最大值02 1/8-27NPSM 10.084 9.906 9.462 9.370 9.093 9.246 9.489 9.60904 1/4-18NPSM 13.360 13.132 12.454 12.342 11.887 12.217 12.487 12.63406 3/8-18NPSM 16.815 16.586 15.890 15.776 15.316 15.545 15.926 16.07608 1/2-14NPSM 20.904

11、20.650 19.733 19.604 18.974 19.279 19.771 19.94212 3/4-14NPSM 26.264 26.010 25.077 24.943 24.333 24.638 25.118 25.29316 1-11.5NPSM 32.842 32.537 31.417 31.270 30.505 30.759 31.460 31.65320 1.1/4-11.5NPSM 41.605 41.300 40.173 40.020 39.268 39.497 40.218 40.41624 1.1/2-11.5NPSM 47.676 47.371 46.241 46

12、.086 45.339 45.568 46.286 46.48732 2-11.5NPSM 59.715 59.411 58.278 58.120 57.379 57.607 58.326 58.53240 2.1/2-8NPSM 72.161 71.780 70.104 69.916 68.783 69.266 70.160 70.40948 3-8NPSM 88.062 87.681 86.009 85.816 84.684 85.166 86.068 86.319NPT布锥管螺纹基面上的直径 螺纹长度标号 螺纹代号 大径 中径 小径 管端至基面长 有效长度端面大径02 Z1/8*27 1

13、0.242 9.489 8.736 4.102 6.703 9.98604 Z1/4*18 13.616 12.487 11.385 5.786 10.206 13.25406 Z3/8*18 17.055 15.926 14.797 6.096 10.358 16.67408 Z1/2*14 21.223 19.772 18.321 8.128 13.556 20.71512 Z3/4*14 26.568 25.117 23.666 8.611 13.861 26.03016 Z1*11.5 33.228 31.461 29.694 10.160 17.343 32.59320 Z1.1/4

14、*1.5 41.985 40.218 38.451 10.668 17.953 41.31824 Z1.1/2*11.5 48.054 46.287 44.520 10.668 18.377 47.38732 Z2*11.5 60.092 58.325 56.558 11.074 19.215 59.40040 Z2.1/2*8 72.699 70.159 67.619 17.323 28.892 71.61648 Z3*8 88.608 86.068 83.528 19.456 30.480 87.39255度英锥管螺纹基本直径 内螺纹 外螺纹公差等级A B标号 螺纹代号大径 中径 小径 中

15、径公差 小径公差中径公差 大径公差 中径公差 大径公差02 G1/8*28 9.728 9.147 8.566 0.170，0 0.282，0 0，-0.170 0，-0.214 0，-0.214 0，-0.21404 G1/4*19 13.157 12.301 11.445 0.125，0 0.445，0 0.-0.125 0，-0.250 0，-0.250 0，-0.25006 G3/8*19 16.662 15.806 14.950 0.125，0 0.445，0 0，-0.125 0，-0.250 0，-0.250 0，-0.25008 G1/2*14 20.955 19.793 18

16、.631 0.142，0 0.541，0 0，-0.142 0，-0.284 0，-0.284 0，-0.28410 G5/8*14 22.911 21.749 20.587 0.142，0 0.541，0 0，-0.142 0，-0.284 0，-0.284 0，-0.28412 G3/4*14 26.441 25.279 24.117 0.142，0 0.541，0 0，-0.142 0，-0.284 0，-0.284 0，-0.28416 G1*11 33.249 31.770 30.291 0.180，0 0.640，0 0，-0.180 0，-0.360 0，-0.360 0，-0.

17、36020 G1.1/4*1141.910 40.431 38.952 0.180，0 0.640，0 0，-0.180 0，-0.360 0，-0.360 0，-0.36024 G1.1/2*1147.803 46.324 44.845 0.180，0 0.640，0 0，-0.180 0，-0.360 0，-0.360 0，-0.36032 G2*11 59.614 58.135 56.656 0.180，0 0.640，0 0，-0.180 0，-0.360 0，-0.360 0，-0.36040 G2.1/2*1 75.184 73.705 72.226 0.217，0 0.640，0

18、 0，-0.217 0，-0.434 0，-0.434 0，-0.434148 G3*11 87.884 86.405 84.926 0.217，0 0.640，0 0，-0.217 0，-0.434 0，-0.434 0，-0.43455度英锥管螺纹基面上的直径 基准长度 有效螺纹长度标号 螺纹代号大径 中径 小径 基本 最大 最小 基本 最大 最小圆锥内螺纹基面轴向位移的极限偏差端面大径02 R1/8*28 9.728 9.147 8.566 4 4.9 3.1 6.5 7.4 5.6 1.1 9.47804 R1/4*19 13.157 12.301 11.445 6 7.3 4.7 9

19、.7 11 8.4 1.7 12.78206 R3/8*19 16.662 15.806 14.950 6.4 7.7 5.1 10.1 11.4 8.8 1.7 16.26208 R1/2*14 20.955 19.793 18.631 8.2 10 6.4 13.2 15 11.4 2.3 20.44312 R3/4*14 26.441 25.279 24.117 9.5 11.3 7.7 14.5 16.3 12.7 2.3 25.84716 R1*11 33.249 31.770 30.291 10.4 12.7 8.1 16.8 19.1 14.5 2.9 32.59920 R1.1

20、/4*1141.910 40.431 38.952 12.7 15 10.4 19.1 21.4 16.8 2.9 41.11624 R1.1/2*1147.803 46.324 44.845 12.7 15 10.4 19.1 21.4 16.8 2.9 47.00932 R2*11 59.614 58.135 56.656 15.9 18.2 13.6 23.4 25.7 21.1 2.9 58.62040 R2.1/2*1175.184 73.705 72.226 17.5 21 14 26.7 30.2 23.2 3.5 74.09048 R3*11 87.884 86.405 84.

21、926 20.6 24.1 17.1 29.8 33.3 26.3 3.5 86.597美制螺纹外螺纹 内螺纹公差等级2A 公差等级2B大径 中径 小径 中径标号 螺纹代号最大 最小 最大 最小小径最大 最小 最大 最小 最大大径最小JIC螺纹02 5/1624UNF 7.910 7.727 7.221 7.127 6.650 6.782 7.036 7.249 7.371 7.93803 3/8*24UNF 9.497 9.314 8.809 8.712 8.237 8.382 8.636 8.837 8.961 9.52504 7/16*20UNF 11.079 10.874 10.254

22、 10.147 9.568 9.728 10.033 10.287 10.424 11.11305 1/2*20UNF 12.667 12.461 11.841 11.732 11.156 11.328 11.608 11.875 12.017 12.706 9/16*18UNF 14.252 14.031 13.335 13.221 12.573 12.751 13.081 13.371 13.52 14.28808 3/4*16UNF 19.012 18.773 17.981 17.854 17.12 17.323 17.678 18.019 18.184 19.0510 7/8*14UN

23、F 22.184 21.923 21.006 20.869 20.025 20.269 20.676 21.046 21.224 22.22512 1.1/16*12UNF 26.944 26.655 25.57 25.425 24.425 24.689 25.146 25.613 25.801 26.98816 1.5/16*12UNF 33.294 33.005 31.92 31.773 30.775 31.039 31.496 31.963 32.154 33.33820 1.5/8*12UNF 41.229 40.94 39.855 39.705 38.71 38.989 39.446

24、 39.901 40.094 41.27524 1.7/8*12UNF 47.579 47.29 46.205 46.053 45.06 45.339 45.796 46.251 46.449 47.62532 2.1/2*12UNF 63.452 63.162 62.078 61.92 60.932 61.214 61.671 62.126 62.332 63.540 3812UNF 76.157 75.862 74.778 74.618 73.632 73.914 74.371 74.826 75.034 76.218HK 1.1/2*10UNF 38.052 37.724 36.401

25、36.238 35.029 35.357 35.890 36.449 36.660 38.100ORFS螺纹04 9/16*18UNF 14.252 14.031 13.335 13.221 12.573 12.751 13.081 13.371 13.52 14.28806 11/16*16UNF 17.427 17.188 16.396 16.274 15.535 15.748 16.104 16.431 16.589 17.46308 13/16*16UNF 20.599 20.361 19.568 19.444 18.707 18.923 19.279 19.606 19.766 20

26、.63810 1*14UNSF 25.357 25.095 24.178 24.036 23.195 23.444 23.825 24.221 24.407 25.412 1.3/16*12UN 30.119 29.83 28.754 28.598 27.6 27.864 28.321 28.788 28.979 30.16316 1.7/16*12UN 36.467 36.177 35.093 34.943 33.947 34.214 34.671 35.138 35.331 36.51320 1.11/16*12UN 42.817 42.527 41.443 41.29 40.297 40

27、.564 41.021 41.488 41.686 42.86324 2*12UN 50.754 50.465 49.38 49.25 48.235 48.514 48.971 49.426 49.627 50.8SAE螺纹06 5/818UNF 15.839 15.618 14.923 14.803 14.161 14.351 14.681 14.958 15.11 15.87512 1.1/16*14UNF 26.947 26.683 25.743 25.608 24.74 24.968 25.375 25.783 25.961 26.987其他美制螺纹9/16*16UN 14.252 1

28、4.013 13.221 13.101 12.36 12.573 12.929 13.256 13.411 14.2887/8*12UN 22.182 21.892 20.808 20.668 19.662 19.939 20.396 20.851 21.034 22.2252.1/4*12UN 57.104 56.815 55.73 55.575 54.585 54.864 55.321 55.776 55.976 57.15可拆式芯子与套筒连接螺纹外螺纹 内螺纹公差等级2B大径 中径 小径 中径软管编号螺纹代号最大 最小 最大 最小小径最小 最大 最小 最大大径R5-04 9/32*32

29、7.120 6.967 6.604 6.523 6.175 6.294 6.472 6.629 6.736 7.145R5-05 46/127*28 9.197 9.032 8.608 8.516 8.115 8.234 8.463 8.636 8.753 9.225R5-06 107/254*28 10.685 10.520 10.095 10.004 9.603 9.735 9.938 10.123 10.240 10.713R5-08 9/16*24 14.257 14.074 13.569 13.470 12.997 13.132 13.386 13.599 13.729 14.288

30、R5-10 11/16*24 17.432 17.249 16.744 16.642 16.172 16.307 16.561 16.774 16.906 17.463R5-12 13/16*20 20.599 20.399 19.779 19.667 19.347 19.253 19.558 19.812 19.982 20.638R5-16 1.1/16*18 26.952 26.731 26.035 25.916 25.273 25.451 25.781 26.071 26.228 26.988R5-20 1.5/16*18 33.299 33.078 32.382 32.258 31.

31、620 31.801 32.131 32.421 32.581 33.338R5-24 1.9/16*18 39.649 39.428 38.732 38.605 37.970 38.151 38.481 38.771 38.936 39.688R5-32 2*18 50.762 50.541 49.845 49.715 49.083 49.276 49.606 49.883 50.053 50.8002A-04 7/16*20 11.079 10.874 10.254 10.147 9.568 9.728 10.033 10.287 10.424 11.1132A-06 9/16*18 14

32、.252 14.031 13.335 13.221 12.573 12.751 13.081 13.371 13.520 14.2882A-08 5/8*18 15.839 15.618 14.923 14.803 14.161 14.351 14.681 14.958 15.110 15.8752A-10 3/4*18 19.014 18.793 18.098 17.981 17.336 17.526 17.856 18.133 18.285 19.0502A-12 7/8*18 22.189 21.968 21.273 21.156 20.511 20.701 21.031 21.308

33、21.460 22.2252A-16 1.3/16*16 30.124 29.870 29.093 28.964 28.232 28.448 28.804 29.131 29.299 30.1632A-20 1.9/16*18 39.649 39.428 38.732 38.605 37.970 38.151 38.481 38.771 38.936 39.688新西兰B09内螺纹标号 你螺纹代号 大径MIN 中径MIN 中径MAX 小径MIN 小径MAXB-09 0.860in*14 21.844 20.683 20.841 19.522NPTF+密封管螺纹标号 螺纹代号 外螺纹小端中径外螺

34、纹大端中径外螺纹小端大径最小外螺纹小端大径最大外螺纹全牙长度内螺纹大端中径内螺纹小端中径内螺纹大端小径最小内螺纹大端小径最大内螺纹全牙长度2 1/8-27NPTF 9.233 9.652 9.871 9.960 6.703 9.489 9.058 8.763 8.851 6.9244 1/4-18NPTF 12.126 12.764 13.128 13.215 10.206 12.487 11.862 11.398 11.486 10.0206 3/8-18NPTF 15.545 16.193 16.547 16.634 10.358 15.926 15.281 14.837 14.924 1

35、0.3308 1/2-14NPTF 19.264 20.111 20.616 20.703 13.556 19.772 18.926 18.333 18.420 13.57112 3/4-14NPTF 24.579 25.445 25.931 26.018 13.861 25.117 24.239 23.678 23.768 14.05416 1-11.5NPTF 30.826 31.910 32.474 32.562 17.343 31.461 30.411 29.725 29.813 16.78720 1.1/4-11.5NPTF 39.551 40.673 41.199 41.287 1

36、7.953 40.218 39.136 38.482 38.570 17.29524 1.1/2-11.5NPTF 45.621 46.769 47.269 47.357 18.377 46.287 45.207 44.551 44.640 17.29532 2-11.5NPTF 57.633 58.834 59.281 59.369 19.215 58.325 57.219 56.589 56.677 17.70140 2.1/2-8NPTF 69.076 70.882 71.476 71.559 28.893 70.159 68.481 67.676 67.759 26.84848 3-8NPTF 84.852 86.757 87.252 87.335 30.480 86.068 84.257 83.585 83.668 28.981备注：1.表中外螺纹的完整螺纹长度包括不超过一个螺距长度的倒角2.表中内螺纹的完整螺纹长度不包括在中径线和倒角交线外的锥口孔。即完整螺纹长度的等于完整内螺纹加一个螺距。