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60°密封管螺纹(NPT锥管螺纹) GB /T 12716 - 2011

NPT 圆锥管螺纹的基本尺寸
螺纹
1/16 1/8 1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3
牙数
螺距 / mm
牙型高度 / mm
大径 d = D / mm
中径 d2 = D2 / mm
小径 d1 = D1 / mm
基准距离 螺纹数量
基准距离 L1 / mm
装配余量距离 螺纹数量
装配距离 L3 / mm
外螺纹小端面内的基本小径 / mm
27 27 18 18 14 14 11.5 11.5 11.5 11.5 8 8
0.941 0.941 1.411 1.411 1.814 1.814 2.209 2.209 2.209 2.209 3.175 3.175
0.753 0.753 1.129 1.129 1.451 1.451 1.767 1.767 1.767 1.767 2.540 2.540
7.895 10.242 13.616 17.055 21.223 26.568 33.228 41.985 48.054 60.092 72.699 88.608
7.142 9.489 12.487 15.926 19.772 25.117 31.461 40.218 46.287 58.325 70.159 86.068
6.389 8.736 11.358 14.797 18.321 23.666 29.694 38.451 44.520 56.558 67.619 83.528
4.32 4.36 4.10 4.32 4.48 4.75 4.60 4.83 4.83 5.01 5.46 6.13
4.064 4.102 5.786 6.096 8.128 8.611 10.160 10.668 10.668 11.074 17.323 19.456
3 3 3 3 3 3 3 3 3 3 2 2
2.822 2.822 4.234 4.234 5.443 5.443 6.627 6.627 6.627 6.627 6.350 6.350
6.137 8.481 10.996 14.417 17.813 23.127 29.060 37.785 43.853 55.867 66.535 82.311
螺纹
3-1/2 4 5 6 8 10 12 14 16 18 20 24
牙数
螺距 / mm
牙型高度 / mm
大径 d = D / mm
中径 d2 = D2 / mm
小径 d1 = D1 / mm
基准距离 螺纹数量
基准距离 L1 / mm
装配余量距离 螺纹数量
装配距离 L3 / mm
外螺纹小端面内的基本小径 / mm
8 8 8 8 8 8 8 8 8 8 8 8
3.175 3.175 3.175 3.175 3.175 3.175 3.175 3.175 3.175 3.175 3.175 3.175
2.540 2.540 2.540 2.540 2.540 2.540 2.540 2.540 2.540 2.540 2.540 2.540
101.316 113.973 140.952 167.792 218.441 272.312 323.032 354.904 405.784 456.565 507.246 608.608
98.776 111.433 138.412 165.252 215.901 269.772 320.492 352.364 403.244 454.025 504.706 606.068
96.236 108.893 135.872 162.712 213.361 267.232 317.952 349.824 400.704 451.485 502.166 603.528
6.57 6.75 7.50 7.66 8.50 9.68 10.88 12.50 14.50 16.00 17.00 19.00
20.853 21.438 23.800 24.333 27.000 30.734 34.544 39.675 46.025 50.800 53.975 60.325
2 2 2 2 2 2 2 2 2 2 2 2
6.350 6.350 6.350 6.350 6.350 6.350 6.350 6.350 6.350 6.350 6.350 6.350
94.933 107.554 134.384 161.191 211.673 265.311 315.793 347.345 397.828 448.310 498.793 599.758
数据来源:GB 12716-2011, ASME B1.20.1
注:技术数据仅供参考,请以官方原件为准!
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