代号 基面上的直径 大径 中径 小径 基本 基准长度 最大 最小 有效螺纹长度 基本 最大 最小 圆锥内螺纹 基面轴向位 移的极限偏 差1.1 1.7 1.7 2.3 2.3 2.9 2.9 2.9 2.9 3.5 3.5 端面大径 02 04 06 08 12 16 20 24 32 40 48 R1/8*28 R1/4*19 R3/8*19 R1/2*14 R3/4*14 R1*11 R1.1/4*11 R1.1/2*11 R2*11 R2.1/2*11 R3*11 9.728 13.157 16.662 20.955 26.441 33.249 41.910 47.803 59.614 75.184 87.884 9.147 12.301 15.806 19.793 25.279 31.770 40.431 46.324 58.135 73.705 86.405 8.566 11.445 14.950 18.631 24.117 30.291 38.952 44.845 56.656 72.226 84.926 4 6 6.4 8.2 9.5 10.4 12.7 12.7 15.9 17.5 20.6 4.9 7.3 7.7 10 11.3 12.7 15 15 18.2 21 24.1 3.1 4.7 5.1 6.4 7.7 8.1 10.4 10.4 13.6 14 17.1 6.5 9.7 10.1 13.2 14.5 16.8 19.1 19.1 23.4 26.7 29.8 7.4 11 11.4 15 16.3 19.1 21.4 21.4 25.7 30.2 33.3 5.6 8.4 8.8 11.4 12.7 14.5 16.8 16.8 21.1 23.2 26.3 9.478 12.782 16.262 20.443 25.847 32.599 41.116 47.009 58.620 74.090 86.597 美制螺纹 标号 螺纹代号 大径 最大 02 03 04 05 06 08 10 12 16 20 24 32 40 18HK 04 06 08 10 5/16×24UNF 3/8*24UNF 7/16*20UNF 1/2*20UNF 9/16*18UNF 3/4*16UNF 7/8*14UNF 1.1/16*12UNF 1.5/16*12UNF 1.5/8*12UNF 1.7/8*12UNF 2.1/2*12UNF 3812UNF 1.1/2*10UNF 9/16*18UNF 11/16*16UNF 13/16*16UNF 1*14UNSF 7.910 9.497 11.079 12.667 14.252 19.012 22.184 26.944 33.294 41.229 47.579 63.452 76.157 38.052 14.252 17.427 20.599 25.357 最小 7.727 9.314 10.874 12.461 14.031 18.773 21.923 26.655 33.005 40.94 47.29 63.162 75.862 37.724 14.031 17.188 20.361 25.095 最大 7.221 8.809 10.254 11.841 13.335 17.981 21.006 25.57 31.92 39.855 46.205 62.078 74.778 36.401 13.335 16.396 19.568 24.178 外螺纹 公差等级 2A 中径 最小 JIC 螺纹 7.127 8.712 10.147 11.732 13.221 17.854 20.869 25.425 31.773 39.705 46.053 61.92 74.618 36.238 13.221 16.274 19.444 24.036 6.650 8.237 9.568 11.156 12.573 17.12 20.025 24.425 30.775 38.71 45.06 60.932 73.632 35.029 12.573 15.535 18.707 23.195 6.782 8.382 9.728 11.328 12.751 17.323 20.269 24.689 31.039 38.989 45.339 61.214 73.914 35.357 12.751 15.748 18.923 23.444 7.036 8.636 10.033 11.608 13.081 17.678 20.676 25.146 31.496 39.446 45.796 61.671 74.371 35.890 13.081 16.104 19.279 23.825 7.249 8.837 10.287 11.875 13.371 18.019 21.046 25.613 31.963 39.901 46.251 62.126 74.826 36.449 13.371 16.431 19.606 24.221 7.371 8.961 10.424 12.017 13.52 18.184 21.224 25.801 32.154 40.094 46.449 62.332 75.034 36.660 13.52 16.589 19.766 24.407 7.938 9.525 11.113 12.7 14.288 19.05 22.225 26.988 33.338 41.275 47.625 63.5 76.2 38.100 14.288 17.463 20.638 25.4 小径 最大 小径 最小 最大 最小 内螺纹 公差等级 2B 中径 最大 大径 最小 ORFS 螺纹 12 16 20 24 06 12 1.3/16*12UN 1.7/16*12UN 1.11/16*12UN 2*12UN 5/8×18UNF 1.1/16*14UNF 9/16*16UN 7/8*12UN 2.1/4*12UN 30.119 36.467 42.817 50.754 15.839 26.947 14.252 22.182 57.104 29.83 36.177 42.527 50.465 15.618 26.683 14.013 21.892 56.815 28.754 35.093 41.443 49.38 14.923 25.743 13.221 20.808 55.73 28.598 34.943 41.29 49.25 14.803 25.608 13.101 20.668 55.575 27.6 33.947 40.297 48.235 14.161 24.74 12.36 19.662 54.585 27.864 34.214 40.564 48.514 14.351 24.968 12.573 19.939 54.864 28.321 34.671 41.021 48.971 14.681 25.375 12.929 20.396 55.321 28.788 35.138 41.488 49.426 14.958 25.783 13.256 20.851 55.776 28.979 35.331 41.686 49.627 15.11 25.961 13.411 21.034 55.976 30.163 36.513 42.863 50.8 15.875 26.987 14.288 22.225 57.15 SAE 螺纹 其他美制螺纹 可拆式芯子与套筒连接螺纹 软管编 号 螺纹