英制螺纹尺寸对照

英制螺纹尺寸

名义尺寸 大径

牙型代号 mm 螺距 mm 中径

每英寸牙数

mm

小径 外螺纹 牙型高 底孔直径 Ww 1/16" BSW 3/32" BSW 1/8" BSW 5/32" BSW 3/16" BSW 7/32" BSW 1/4" BSW 5/16" BSW 3/8" BSW 7/16" BSW 1/2" BSW 5/8" BSW 3/4" BSW 7/8" BSW 1" BSW 1 1/8" BSW 1 1/4" BSW 1 3/8" BSW 1 1/2" BSW 1 5/8" BSW 1 3/4" BSW 1 7/8" BSW 2" BSW 2 1/4" BSW 2 1/2" BSW 2 3/4" BSW 3" BSW 3 1/4" BSW 3 1/2" BSW 3 3/4" BSW 4" BSW 4 1/4" BSW 4 1/2" BSW 4 3/4" BSW 5" BSW 5 1/4" BSW 5 1/2"

BSW

d=D 1.587 2.381 3.175 3.969 4.762 5.556 6.350 7.938 9.525 11.113 12.700 15.876 19.051 22.226 25.400 28.576 31.751 34.926 38.100 41.277 44.452 47.627 50.802 57.152 63.502 69.853 76.203 82.553 88.903 95.254 101.604 107.954 114.304 120.665 127.005 133.355 139.705

p tpi

0.423 60 0.529 48 0.635 40 0.793 32 1.058 24 1.058 24 1.270 20 1.411 18 1.588 16 1.814 14 2.117 12 2.309 11 2.540 10 2.822 9 3.175 8 3.629 7 3.629 7 4.233 6 4.233 6 5.080 5 5.080 5 5.645 4 1/2 5.645 4 1/2 6.350 4 6.350 4 7.257 3 1/2 7.257 3 1/2 7.816 3 1/4 7.816 3 1/4 8.467 3 8.467 3 8.835 2 7/8 8.835 2 7/8 9.237 2 3/4 9.237 2 3/4 9.677 2 5/8 9.677

2 5/8

d2=D2 1.315 2.041 2.768 3.459 4.084 4.878 5.537 7.034 8.509 9.951 11.345 14.397 17.424 20.419 23.368 26.253 29.428 32.215 35.391 38.024 41.199 44.012 47.187 53.086 59.436 65.205 71.556 77.548 83.899 89.832 96.182 102.297 108.647 114.740 121.090 127.159 133.509

d3 1.050 1.703 2.362 2.952 3.407 4.201 4.724 6.131 7.492 8.789 9.990 12.918 15.798 18.611 21.335 23.929 27.104 29.505 32.680 34.771 37.946 40.398 43.573 49.020 55.370 60.558 66.909 72.544 78.894 84.410 90.760 96.639

102.990 108.625 115.176 120.963 127.313 H1 mm

0.270 1.15 0.338 1.90 0.406 2.50 0.507 3.20 0.677 3.70 0.677 4.50 0.813 5.10 0.904 6.50 1.017 7.90 1.162 9.20 1.355 10.40 1.479 13.40 1.627 16.25 1.807 19.25 2.033 22.00 2.324 24.50 2.324 27.25 2.711 30.25 2.711 33.50 3.253 35.50 3.253 38.50 3.614 41.25 3.614 44.50 4.066 50.00 4.066 56.00 4.647 61.50 4.647 68.00 5.005 73.75 5.005 80.00 5.422 85.50 5.422 92.00 5.657

98.00 5.657 104.20 5.915 110.00 5.915 116.50 6.196 122.50 6.196

128.50

英制螺纹尺寸对照

5 3/4" 6"

BSW BSW

146.055 152.406

10.160 10.160

2 1/2 2 1/2

139.549 145.900

133.043 6.506 139.394 6.506

134.50 141.00