英制螺纹表圆锥管螺纹NPT1 1/4的大径,...

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英制管螺纹内径外径对照表
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英制普通螺纹规格表
英制普通螺纹 (惠氏螺纹) -- 小螺纹系列 (BA) &名义尺寸 牙型代号 大径 螺距 每英寸牙数 中径 小径 牙型高 底孔直径 &BA mm mm tpi mm 外螺纹 H1 mm &  d=D p   d2=D2 d3     &No. 14 BA 1 0.23 110.4 0.86 0.72 0.14 0.75 &No. 13 BA 1.2 0.25 101.6 1.05 0.9 0.15 0.95 &No. 12 BA 1.3 0.28 90.71 1.13 0.96 0.17 1 &No. 11 BA 1.5 0.31 81.93 1.315 1.13 0.185 1.2 &No. 10 BA 1.7 0.35 72.57 1.49 1.28 0.21 1.35 &No. 9 BA 1.9 0.39 65.12 1.665 1.43 0.235 1.5 &No. 8 BA 2.2 0.43 59.07 1.94 1.68 0.26 1.8 &No. 7 BA 2.5 0.48 52.92 2.21 1.92 0.29 2 &No. 6 BA 2.8 0.53 47.92 2.48 2.16 0.32 2.3 &No. 5 BA 3.2 0.59 43.05 2.845 2.49 0.355 2.6 &No. 4 BA 3.6 0.66 38.48 3.205 2.81 0.395 2.95 &No. 3 BA 4.1 0.73 34.79 3.66 3.22 0.44 3.4 &No. 2 BA 4.7 0.81 31.35 4.215 3.73 0.485 3.9 &No. 1 BA 5.3 0.9 28.22 4.76 4.22 0.54 4.4 &No. 0 BA 6 1 25.4 5.4 4.8 0.6 5 &  &&
&55°圆锥管螺纹型式和尺寸 ( 14:38:47 )螺纹代号 基本尺寸 大径 螺距 每英寸牙数 中径 小径 牙型高度 圆弧尺寸 底孔尺寸英 寸 mm mm tpi mm 外螺纹 H1 r mm  d=D p   d2=D2 d3      R 1/16 1/16" 7.723 0.907 28 7.142 6.561 0.581 0.125 6.4R 1/8 1/8" 9.728 0.907 28 9.147 8.566 0.581 0.125 8.4R 1/4 1/4" 13.157 1.337 19 12.301 11.445 0.856 0.184 11.2R 3/8 3/8" 16.662 1.337 19 15.806 14.95 0.856 0.184 14.75R 1/2 1/2" 20.955 1.814 14 19.793 18.631 1.162 0.249 18.25R 3/4 3/4" 26.441 1.814 14 25.279 24.117 1.162 0.249 23.75R 1 1" 33.249 2.309 11 31.77 30.291 1.479 0.317 30R 1 1/4 1 1/4" 41.91 2.309 11 40.431 38.952 1.479 0.317 38.5R 1 1/2 1 1/2" 47.803 2.309 11 46.324 44.845 1.479 0.317 44.5R 2 2" 59.614 2.309 11 58.135 56.656 1.479 0.317 56R 2 1/2 2 1/2" 75.184 2.309 11 73.705 72.226 1.479 0.317 71R 3 3" 87.884 2.309 11 86.405 84.926 1.479 0.317 85.5R 4 4" 113.03 2.309 11 111.551 110.072 1.479 0.317 110.5R 5 5" 138.43 2.309 11 136.951 135.472 1.479 0.317 136R 6 6" 163.83 2.309 11 162.351 160.872 1.479 0.317 161.5&
&制惠氏螺纹的型式尺寸英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW)名义尺寸 牙型代号 大径 螺距 每英寸牙数 中径 小径 牙型高 底孔直径  Ww mm mm tpi mm 外螺纹 H1 mm  d=D p   d2=D2 d3    1/16" BSW 1.587 0.423 60 1.315 1.05 0.27 1.15  3/32" BSW 2.381 0.529 48 2.041 1.703 0.338 1.9  1/8" BSW 3.175 0.635 40 2.768 2.362 0.406 2.5  5/32" BSW 3.969 0.793 32 3.459 2.952 0.507 3.2  3/16" BSW 4.762 1.058 24 4.084 3.407 0.677 3.7  7/32" BSW 5.556 1.058 24 4.878 4.201 0.677 4.5  1/4" BSW 6.35 1.27 20 5.537 4.724 0.813 5.1  5/16" BSW 7.938 1.411 18 7.034 6.131 0.904 6.5  3/8" BSW 9.525 1.588 16 8.509 7.492 1.017 7.9  7/16" BSW 11.113 1.814 14 9.951 8.789 1.162 9.2  1/2" BSW 12.7 2.117 12 11.345 9.99 1.355 10.4  5/8" BSW 15.876 2.309 11 14.397 12.918 1.479 13.4  3/4" BSW 19.051 2.54 10 17.424 15.798 1.627 16.25  7/8" BSW 22.226 2.822 9 20.419 18.611 1.807 19.25  1" BSW 25.4 3.175 8 23.368 21.335 2.033 22  1 1/8" BSW 28.576 3.629 7 26.253 23.929 2.324 24.5  1 1/4" BSW 31.751 3.629 7 29.428 27.104 2.324 27.25  1 3/8" BSW 34.926 4.233 6 32.215 29.505 2.711 30.25  1 1/2" BSW 38.1 4.233 6 35.391 32.68 2.711 33.5  1 5/8" BSW 41.277 5.08 5 38.024 34.771 3.253 35.5  1 3/4" BSW 44.452 5.08 5 41.199 37.946 3.253 38.5  1 7/8" BSW 47.627 5.645 4 1/2 44.012 40.398 3.614 41.25  2" BSW 50.802 5.645 4 1/2 47.187 43.573 3.614 44.5  2 1/4" BSW 57.152 6.35 4 53.086 49.02 4.066 50  2 1/2" BSW 63.502 6.35 4 59.436 55.37 4.066 56  2 3/4" BSW 69.853 7.257 3 1/2 65.205 60.558 4.647 61.5  3" BSW 76.203 7.257 3 1/2 71.556 66.909 4.647 68  3 1/4" BSW 82.553 7.816 3 1/4 77.548 72.544 5.005 73.75  3 1/2" BSW 88.903 7.816 3 1/4 83.899 78.894 5.005 80  3 3/4" BSW 95.254 8.467 3 89.832 84.41 5.422 85.5  4" BSW 101.604 8.467 3 96.182 90.76 5.422 92  4 1/4" BSW 107.954 8.835 2 7/8 102.297 96.639 5.657 98  4 1/2" BSW 114.304 8.835 2 7/8 108.647 102.99 5.657 104.2  4 3/4" BSW 120.665 9.237 2 3/4 114.74 108.625 5.915 110  5" BSW 127.005 9.237 2 3/4 121.09 115.176 5.915 116.5  5 1/4" BSW 133.355 9.677 2 5/8 127.159 120.963 6.196 122.5  5 1/2" BSW 139.705 9.677 2 5/8 133.509 127.313 6.196 128.5  5 3/4" BSW 146.055 10.16 2 1/2 139.549 133.043 6.506 134.5  6" BSW 152.406 10.16 2 1/2 145.9 139.394 6.506 141                      英制普通螺纹 -- 细牙 -- BSF 英制普通螺纹 (惠氏螺纹) -- 细牙 (BSW)  名义尺寸 牙型代号 大径 螺距 每英寸牙数 中径 小径 牙型高 底孔直径  BSF mm mm tpi mm 外螺纹 H1 mm    d=D p   d2=D2 d3      3/16 BSF 4.763 0.794 32 4.255 3.747 0.508 4  7/32 BSF 5.556 0.907 28 4.975 4.394 0.581 4.6  1/4 BSF 6.35 0.977 26 5.725 5.1 0.625 5.3  9/32 BSF 7.142 0.977 26 6.518 5.893 0.625 6.1  5/16 BSF 7.938 1.156 22 7.199 6.459 0.739 6.8  3/8 BSF 9.525 1.27 20 8.712 7.899 0.813 8.3  7/16 BSF 11.113 1.411 18 10.209 9.304 0.904 9.7  1/2 BSF 12.7 1.588 16 11.684 10.668 1.017 11.1  9/16 BSF 14.288 1.588 16 13.272 12.256 1.017 12.7  5/8 BSF 15.875 1.814 14 14.712 13.549 1.162 14  11/16 BSF 17.463 1.814 14 16.3 15.137 1.162 15.5  3/4 BSF 19.05 2.117 12 17.693 16.336 1.355 16.75  13/16 BSF 20.638 2.117 12 19.281 17.924 1.355 18.25  7/8 BSF 22.225 2.309 11 20.747 19.269 1.479 19.75  1.00 BSF 25.4 2.54 10 23.774 22.148 1.627 22.75  1 1/8 BSF 28.575 2.822 9 26.769 24.963 1.807 26.5  1 1/4 BSF 31.75 2.822 9 29.944 28.138 1.807 28.75  1 3/8 BSF 34.925 3.175 8 32.893 30.861 2.033 31.5  1 1/2 BSF 38.1 3.175 8 36.068 34.036 2.033 34.5  1 5/8 BSF 41.275 3.175 8 39.243 37.211 2.033 38  1 3/4 BSF 44.45 3.629 7 42.126 39.802 2.324 40.5  2 &
BSF 50.8 3.629 7 48.476 46.152 2.324 47  2 1/4 BSF 57.15 4.234 6 54.44 51.73 2.711 53  2 1/2 BSF 63.5 4.234 6 60.79 58.08 2.711 59  2 3/4 BSF 69.85 4.234 6 67.14 64.43 2.711 -  3 &
BSF 76.2 5.08 5 72.946 69.692 3.253 -  3 1/4 BSF 82.55 5.08 5 79.296 76.042 3.253 -  3 1/2 BSF 88.9 5.645 4 1/2 85.285 81.67 3.614 -  3 3/4 BSF 95.25 5.645 4 1/2 91.635 88.02 3.614 -  4 &
BSF 101.6 5.645 4 1/2 97.985 94.37 3.614 -  4 1/4 BSF 107.95 6.35 4 103.886 99.822 4.066 -  &
&55°圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) -- 圆柱 (BSPP/BSPF)螺纹代号 基本尺寸 大径 螺距 每英寸牙数 中径 小径 牙型高度 底孔尺寸  mm mm tpi mm 外螺纹 H1 mmd=D p   d2=D2 d3    G 1/8 1/8" 9.728 0.907 28 9.147 8.566 0.581 8.7  G 1/4 1/4" 13.157 1.337 19 12.301 11.445 0.856 11.6  G 3/8 3/8" 16.662 1.337 19 15.806 14.95 0.856 15  G 1/2 1/2" 20.955 1.814 14 19.793 18.631 1.162 19  G 5/8 5/8" 22.911 1.814 14 21.749 20.587 1.162 20.75  G 3/4 3/4" 26.441 1.814 14 25.279 24.117 1.162 24.5  G 7/8 7/8" 30.201 1.814 14 29.039 27.877 1.162 28  G 1 1" 33.249 2.309 11 31.77 30.291 1.479 30.5  G 1 1/8 1 1/8" 37.897 2.309 11 36.418 34.939 1.479 35  G 1 1/4 1 1/4" 41.91 2.309 11 40.431 38.952 1.479 39.5  G 1 3/8 1 3/8" 44.323 2.309 11 42.844 41.365 1.479 41.5  G 1 1/2 1 1/2" 47.803 2.309 11 46.324 44.845 1.479 45  G 1 3/4 1 3/4" 53.746 2.309 11 52.267 50.788 1.479 51  G 2 2" 59.614 2.309 11 58.135 56.656 1.479 57  G 2 1/4 2 1/4" 65.71 2.309 11 64.231 62.752 1.479 63  G 2 1/2 2 1/2" 75.184 2.309 11 73.705 72.226 1.479 72.5  G 2 3/4 2 3/4" 81.534 2.309 11 80.055 78.576 1.479 79  G 3 3" 87.884 2.309 11 86.405 84.926 1.479 85.5  G 3 1/4 3 1/4" 93.98 2.309 11 92.501 91.022 1.479 91  G 3 1/2 3 1/2" 100.33 2.309 11 98.351 97.372 1.479 97.75  G 3 3/4 3 3/4" 106.68 2.309 11 105.201 103.722 1.479 104  G 4 4" 113.03 2.309 11 111.55 110.072 1.479 110.5  G 4 1/2 4 1/2" 125.73 2.309 11 124.251 122.772 1.479 123  G 5 5" 138.43 2.309 11 136.951 135.472 1.479 136  G 5 1/2 5 1/2" 151.13 2.309 11 149.651 148.172 1.479 148.5  G 6 6" 163.83 2.309 11 162.351 160.872 1.479 161.5  
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TA的最新馆藏[转]&[转]&[转]&[转]&[转]&[转]&G1/4跟1/4NPT 有什么区别?
G1/4"螺纹英制锥管螺纹,牙形角是55°,的螺距是1.337毫米,外径是13.158毫米,每英寸19牙NPT1/4 螺纹是美制锥管螺纹,牙形角是60° 锥度是 1;16 ,螺距是1.411毫米,外经是13.616毫米,每英寸18牙
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