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1、55圆锥管螺纹型式和尺寸圆锥管螺纹型式和尺寸 螺纹代 号 基本尺 寸 英 寸 大径 mm d=D 螺距 mm p 每英寸 牙数 tpi 中径 mm d2=D2 小径 外螺纹 d3 牙型高 度 H1 圆弧尺 寸 r 底孔尺 寸 mm R 1/16 1/16 7.723 0.907 28 7.142 6.561 0.581 0.125 6.4 R 1/8 1/8 9.728 0.907 28 9.147 8.566 0.581 0.125 8.4 R 1/4 1/4 13.157 1.337 19 12.301 11.445 0.856 0.184 11.2 R 3/8 3/8 16.662 1.
2、337 19 15.806 14.950 0.856 0.184 14.75 R 1/2 1/2 20.955 1.814 14 19.793 18.631 1.162 0.249 18.25 R 3/4 3/4 26.441 1.814 14 25.279 24.117 1.162 0.249 23.75 R 1 1 33.249 2.309 11 31.77 30.291 1.479 0.317 30 R 1 1/4 1 1/4 41.910 2.309 11 40.431 38.952 1.479 0.317 38.5 R 1 1/2 1 1/2 47.803 2.309 11 46.3
3、24 44.845 1.479 0.317 44.5 R 2 2 59.614 2.309 11 58.135 56.656 1.479 0.317 56 R 2 1/2 2 1/2 75.184 2.309 11 73.705 72.226 1.479 0.317 71 R 3 3 87.884 2.309 11 86.405 84.926 1.479 0.317 85.5 R 4 4 113.030 2.309 11 111.551 110.072 1.479 0.317 110.5 R 5 5 138.430 2.309 11 136.951 135.472 1.479 0.317 13
4、6 R 6 6 163.830 2.309 11 162.351 160.872 1.479 0.317 161.5 55圆柱管螺纹的型式和尺寸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 mm d=D 螺距 mm p 每英寸牙 数 tpi 中径 mm d2=D2 小径 外螺纹 d3 牙型高 度 H1 底孔尺 寸 mm 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 0.8
5、56 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
6、.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
7、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 2.30
8、9 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
9、6 6 163.83 2.309 11 162.351 160.872 1.479 161.5 英制普通螺纹 (惠氏螺纹) - 粗牙 (BSW) 名义尺寸 Ww 牙型代 号 大径 mm d=D 螺距 mm p 每英寸牙 数 tpi 中径 mm d2=D2 小径 外螺纹 d3 牙型高 H1 底孔直径 mm 1/16 BSW 1.587 0.423 60 1.315 1.050 0.270 1.15 3/32 BSW 2.381 0.529 48 2.041 1.703 0.338 1.90 1/8 BSW 3.175 0.635 40 2.768 2.362 0.406 2.50 5/32 BS
10、W 3.969 0.793 32 3.459 2.952 0.507 3.20 3/16 BSW 4.762 1.058 24 4.084 3.407 0.677 3.70 7/32 BSW 5.556 1.058 24 4.878 4.201 0.677 4.50 1/4 BSW 6.350 1.270 20 5.537 4.724 0.813 5.10 5/16 BSW 7.938 1.411 18 7.034 6.131 0.904 6.50 3/8 BSW 9.525 1.588 16 8.509 7.492 1.017 7.90 7/16 BSW 11.113 1.814 14 9.
11、951 8.789 1.162 9.20 1/2 BSW 12.700 2.117 12 11.345 9.990 1.355 10.40 5/8 BSW 15.876 2.309 11 14.397 12.918 1.479 13.40 3/4 BSW 19.051 2.540 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 25.400 3.175 8 23.368 21.335 2.033 22.00 1 1/8 BSW 28.576 3.629 7 26.253 23
12、.929 2.324 24.50 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 38.100 4.233 6 35.391 32.680 2.711 33.50 1 5/8 BSW 41.277 5.080 5 38.024 34.771 3.253 35.50 1 3/4 BSW 44.452 5.080 5 41.199 37.946 3.253 38.50 1 7/8 BSW 47.627 5.645 4 1/2
13、 44.012 40.398 3.614 41.25 2 BSW 50.802 5.645 4 1/2 47.187 43.573 3.614 44.50 2 1/4 BSW 57.152 6.350 4 53.086 49.020 4.066 50.00 2 1/2 BSW 63.502 6.350 4 59.436 55.370 4.066 56.00 2 3/4 BSW 69.853 7.257 3 1/2 65.205 60.558 4.647 61.50 3 BSW 76.203 7.257 3 1/2 71.556 66.909 4.647 68.00 3 1/4 BSW 82.5
14、53 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 80.00 3 3/4 BSW 95.254 8.467 3 89.832 84.410 5.422 85.50 4 BSW 101.604 8.467 3 96.182 90.760 5.422 92.00 4 1/4 BSW 107.954 8.835 2 7/8 102.297 96.639 5.657 98.00 4 1/2 BSW 114.304 8.835 2 7/8 108.647 102.990 5.
15、657 104.20 4 3/4 BSW 120.665 9.237 2 3/4 114.740 108.625 5.915 110.00 5 BSW 127.005 9.237 2 3/4 121.090 115.176 5.915 116.50 5 1/4 BSW 133.355 9.677 2 5/8 127.159 120.963 6.196 122.50 5 1/2 BSW 139.705 9.677 2 5/8 133.509 127.313 6.196 128.50 5 3/4 BSW 146.055 10.160 2 1/2 139.549 133.043 6.506 134.
16、50 6 BSW 152.406 10.160 2 1/2 145.900 139.394 6.506 141.00 英制普通螺纹 (惠氏螺纹) - 细牙 (BSW) 名义尺寸 BSF 牙型代号 大径 mm d=D 螺距 mm p 每英寸牙数 tpi 中径 mm d2=D2 小径 外螺纹 d3 牙型高 H1 底孔直径 mm 3/16 BSF 4.763 0.794 32 4.255 3.747 0.508 4.00 7/32 BSF 5.556 0.907 28 4.975 4.394 0.581 4.60 1/4 BSF 6.350 0.977 26 5.725 5.100 0.625 5.30 9/32 BSF 7.142 0.977 26 6.518 5.893 0.625 6.10 5/16
