大径 螺距 中径 小径 名义尺寸 每英寸牙数 牙型高 底孔直径 牙型代号 mm mm mm 外螺纹 Ww tpi H1 mm d=D p d2=D2 d3
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" BSW 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 9.951 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 23.929 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 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 82.553 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 80.00 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 5.657 104.20
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 6.506 134.50 6" BSW 152.406 10.160 2 1/2 145.900 139.394 6.506 141.00
螺纹尺寸表
公制螺纹基本尺寸及公差
基本直径
螺纹代号
大径
中径
小径
中径 公差 +0.150 0 +0.160 0 +0.160 0 +0.180 0 +0.180 0 +0.190 0 +0.190 0 +0.190 0 +0.190 0 +0.190 0 +0.190 0 +0.200 0 +0.200 0 +0.200 0 +0.200 0 +0.200 0 +0.200 0 +0.200 0 +0.200 0 +0.224 0 +0.224 0 +0.224 0 +0.224 0 +0.224 0 +0.224 0 +0.224 0 +0.236 0 +0.236 0 +0.236 0 +0.236 0
小径 公差 +0.236 0 +0.236 0 +0.236 0 +0.265 0 +0.265 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 +0.0.300
0 +0.375 0 +0.375 0 +0.375 0 +0.375 0 +0.375 0 +0.375 0 +0.375 0 +0.375 0 +0.375 0 +0.375 0 +0.375 0
中径 公差 +0.190 0 +0.200 0 +0.200 0 +0.224 0 +0.224 0 +0.236 0 +0.236 0 +0.236 0 +0.236 0 +0.236 0 +0.236 0 +0.250 0 +0.250 0 +0. 250 0 +0. 250 0 +0. 250 0 +0. 250 0 +0. 250 0 +0. 250 0 +0.280 0 +0. 280 0 +0. 280 0 +0. 280 0 +0. 280 0 +0. 280 0 +0. 280 0 +0.300 0 +0.300 0 +0.300 0 +0.300 0 内螺纹 公差等级
小径 公差 +0.300 0 +0.300 0 +0.300 0 +0.335 0 +0.335 0 +0.375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 375 0 +0. 475 0 +0. 475 0 +0. 475 0 +0. 475 0 +0. 475 0 +0. 475 0 +0. 475 0 +0. 475 0 +0. 475 0 +0. 475 0 +0. 475 0
外螺纹 公差等级 中径 大径 公差 公差 -0.026 -0.026 -0.138 -0.206 -0.026 -0.026 -0.144 -0.206 -0.026 -0.026 -0.144 -0.206 -0.028 -0.028 -0.160 -0.240 -0.028 -0.028 -0.160 -0.240 -0.032 -0.032 -0.172 -0.268 -0.032 -0.032 -0.172 -0.268 -0.032 -0.032 -0.172 -0.268 -0.032 -0.032 -0.172 -0.268 -0.032 -0.032 -0.172 -0.268 -0.032 -0.032 -0.172 -0.268 -0.032 -0.032 -0.182 -0.268 -0.032 -0.032 -0.182 -0.268 -0.032 -0.032 -0.182 -0.268 -0.032 -0.032 -0.182 -0.268 -0.032 -0.032 -0.182 -0.268 -0.032 -0.032 -0.182 -0.268 -0.032 -0.032 -0.182 -0.268 -0.032 -0.032 -0.182 -0.268 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318 -0.038 -0.038 -0.208 -0.318
M10×1 M12×1 M14×1 M12×1.25 M14×1.25 M12×1. 5 M14×1.5 M16×1.5 M18×1.5 M20×1.5 M22×1.5 M24×1.5 M26×1.5 M27×1.5 M30×1.5 M33×1.5 M36×1.5 M39×1.5 M42×1.5 M27×2 M30×2 M33×2 M36×2 M39×2 M42×2 M45×2 M52×2 M60×2 M64×2 M72×2
10 12 14 12 14 12 14 16 18 20 22 24 26 27 30 33 36 39 42 27 30 33 36 39 42 45 52 60 64 72
9.350 11.350
8.917 10.917
13.350 12.917 11.188
10.647
13.188 12.647 11.026
10.376
13.026 12.376 15.026 14.376 17.026 16.376 19.026 18.376 21.026 20.376 23.026 22.376 25.026 24.376 26.026 25.376 29.026 28.376 32.026 31.376 35.026 34.376 38.026 37.376 41.026 40.376 25.701 24.835 28.701 27.835 31.701 30.835 34.701 33.835 37.701 36.835 40.701 39.835 43.701 42.835 50.701 49.835 58.701 57.835 62.701 61.835 70.701 69.835
布锥管螺纹基本尺寸及公差(牙形角60℃)
基面上的直径
螺纹代号
大径
Z1/8”×27 Z1/4”×18 Z3/8”×18 Z1/2”×14 Z3/4”×14 Z1”×11.5 Z1.1/4”×11.5 Z1.1/2”×11.5 Z12”×11.5
英管螺纹基本尺寸驻公差(牙形角55℃)
基本直径
螺纹代号
大径
中径
小径
内螺纹 中径 公差 +0.170 0 +0.125 0 +0.125 0 +0.142 0 +0.142 0 +0.142 0 +0.180 0 +0.180 0 +0.180 0 +0.180 0
小径 公差 +0.282 0 +0.445 0 +0.445 0 +0.541 0 +0.541 0 +0.541 0 +0.640 0 +0.640 0 +0.640 0 +0.640 0
外螺纹
公差等级
A 中径 大径 公差 公差 0 0 -0.107 -0.214 0 0 -0.125 -0.250
0 0
-0.125 -0.250 -0.142 -0.284 0 0 -0.142 -0.284
0 0
-0.142 -0.284 0 0 -0.180 -0.360 0 0 -0.180 -0.360
0 0
-0.180 -0.360 0 0 -0.180 -0.360
公差等级
B
中径 大径 公差 公差 0 0 -0.214 -0.214 0 0 -0.250 -0.250 0 0 -0.250 -0.250 -0.284 -0.284 0 0 -0.284 -0.284 0 0 -0.284 -0.284 0 0 -0.360 -0.360 0 0 -0.360 -0.360 0 0 -0.360 -0.360 0 0 -0.360 -0.360
10.272 13.572 17.055 21.233 26.568 33.228 41.985 48.054 60.092
中径 9.519 12.443 15.926 19.772 25.117 31.461 40.218 46.287 58.325
小径 8.766 11.314 14.797 18.321 23.666 29.694 38.451 44.520 56.558
有效长度
7 9.5 10.5 13.5 14 17.5 18 18.5 19
管端至基面长
4.572 5.080 6.096 8.028 8.611 10.160 10.688 10.688 11.074
螺纹长度
G1/8” ×28 G1/4” ×19 G3/8” ×19 G1/2” ×14 G5/8” ×14 G3/4” ×14 G1” ×11 G1.1/4” ×11 G1.1/2” ×11 G2” ×11
9.728 13.157 16.662 20.955 22.911 26.441 33.249 41.910 47.803 59.614
9.147 12.301 15.806 19.793 21.749 25.279 31.771 40.431 46.324 58.135
8.566 11.445 14.950 18.631 20.587 24.117 30.291 38.952 44.845 56.656
英锥管螺纹基本尺寸及公差(牙形角55℃)
基面上的直径
螺纹代号 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
大径 9.728 13.157 16.662 20.955 26.441 33.249 41.910 47.803 59.614
中径 9.147
小径 8.566
基本 4.0 6.0 6.4 8.2 9.5
基准长度 最大 4.9 7.3 7.7 10.0 11.3 12.7 15.0 15.0 18.2
最小 3.1 4.7 5.1 6.4 7.7 8.1 10.4 10.4 13.6
有效螺纹长度 基本 6.5 9.7 10.1 13.2 14.5 16.8 19.1 19.1 23.4
最大 7.4 11.0 11.4 15.0 16.3 19.1 21.4 21.4 25.7
最小 5.6 8.4 8.8 11.4 12.7 14.5 16.8 16.8 21.1
圆锥内螺纹基面轴向位移的极限偏差±mm
1.1 1.7 1.7 2.3 2.3 2.9 2.9 2.9 2.9
12.301 11.445 15.806 14.950 19.793 18.631 25.279 24.117
31.771 30.291 10.4 40.431 38.952 12.7 46.324 44.845 12.7 58.135 56.656 15.9
注:内锥螺纹表示方法为:Rc1” ×11.
美制螺纹基本尺寸及公差(牙形角60℃)
螺纹代号
7/16”× 20UNF 1/2”× 20UNF 9/16”× 18UNF 3/4”× 16UNF 7/8”× 14UNF 1-1/16”× 12UN 1-5/16”× 12UN 1-5/8”× 12UN 1-7/8”× 12UN 2-1/2”× 12UN 9/16”× 18UNF 11/16”× 16UN 13/16”× 16UN 1”× 14UNsf 1-3/16”× 12UN 17/16”× 12UN 1-11/16”× 12UN 2”× 12UN 5/8”× 18UNF 1-1/16”× 14UN 9/16”× 6UN 7/8”× 12UN 2-1/4”× 12UN
大径 最大 最小 11.079 12.667 14.252 19.012 22.184 26.944 33.294 41.229 47.579 63.452 14.252 17.427 20.599 25.357 30.119 36.467 42.817 50.754 15.839 26.947 14.252 22.182 57.104
10.874 12.461 14.031 18.773 21.923 26.655 33.005 40.94 47.29 63.162 14.031 17.188 20.361 25.095 29.83 36.177 42.527 50.465 15.618 26.683 14.013 21.892 56.815
外螺纹
公差等级 2A 中径
小径
最大 最小
JIC 螺纹 10.254 11.841 13.335 17.981 21.006 25.57 31.92 39.855 46.205 62.078 13.335 16.396 19.568 24.178 28.745 35.093 41.443 49.38 14.923 25.743 13.221 20.808 55.73
10.147 11.732 13.221 17.854 20.869 25.425 31.773 39.705 46.053 61.92 13.221 16.274 19.444 24.036 28.598 34.943 41.29 49.225 14.803 25.608 13.101 20.668 55.575
9.568 11.156 12.573 17.12 20.025 24.425 30.775 38.71 45.06 60.932 12.573 15.535 18.707 23.195 27.6 33.947 40.297 48.235 14.161 24.74 12.36 19.662 54.585
内螺纹 公差等级 2B
中径 最小 最大
10.424 12.017 13.52 18.184 21.224 25.801 32.154 40.094 46.449 62.332 13.52 16.589 19.766 24.407 28.979 35.331 41.686 49.627 15.11 25.961 13.411 21.034 55.976
小径
最小 最大 9.728 11.328 12.751 17.323 20.269 24.689 31.039 38.989 45.339 61.214 12.751 15.748 18.923 23.444 27.864 34.214 40.564 48.514 14.351 24.968 12.573 19.939 54.864
大径
10.033 10.287 11.608
11.875
13.081 13.371 17.678 18.019 20.676 21.046 25.146 25.613 31.496 31.963 39.446 39.901 45.796 46.251 61.671 62.126 13.081 13.371 16.104 16.431 19.279 19.606 23.825 24.221 28.321 28.788 34.671 35.138 41.021 41.488 48.971 49.426 14.681 14.958 25.375 25.783 12.929 13.256 20.396 20.851 55.321 55.776
11 12 14 19 22 26 33 41 47 63 14 17 20 25 30 36 42 50 15 26 14 22 57
ORFS 螺纹
SAE 螺纹
其他美制螺纹
M螺纹基本尺寸表
(mm) 公称直中径 螺距 外螺纹外径 内螺纹内径(dl) 圆角半径 径 (d2) (t) 最小 最大 最小 最大 钻头直径 (r) (d)
6 5.35 1 5.75 6 4.92 5.12 5 0.14 8 7.19 1.25 7.70 8 6.65 6.87 6.7 0.18 10 9.35 1 9.75 10 8.92 9.12 9 0.14 10 9.03 1.5 9.65 10 8.38 8.63 8.5 0.22 12 11.35 1 11.75 12 10.92 11.12 11 0.14 12 11.03 1.5 11.65 12 10.38 10.63 10.5 0.22 14 13.35 1 13.75 14 12.92 13.12 13 0.14 14 13.03 1.5 13.65 14 12.38 12.63 12.5 0.22 16 15.35 1 15.75 16 14.92 15.12 15 0.14 16 15.03 1.5 15.65 16 14.38 14.63 14.5 0.22 18 17.35 1 17.75 18 16.92 17.12 17 0.14 18 17.03 1.5 17.65 18 16.38 16.63 16.5 0.22 20 19.03 1.5 19.65 20 18.38 18.63 18.5 0.22 20 19.35 1 19.75 20 18.92 19.12 19 0.14 22 21.03 1.5 21.65 22 20.38 20.63 20.5 0.22 24 23.03 1.5 23.65 24 22.38 22.63 22.5 0.22 27 26.03 1.5 26.65 27 25.38 25.63 0.22 27 25.70 2 26.59 27 24.84 25.14 0.29 30 29.03 1.5 29.65 30 28.38 28.63 0.22 36 35.03 1.5 36.65 36 34.38 34.63 0.22 40 39.03 1.5 39.65 40 38.38 38.63 0.22 42 40.70 2 41.59 42 39.84 40.14 0.29 48 47.03 1.5 47.65 48 46.38 46.63 0.22 52 50.70 2 51.59 52 49.84 50.14 0.29
苏州市中新动力设备辅机有限公司
管螺纹尺寸表
55?圆锥管螺纹型式和尺寸
基本尺大径 螺距 每英寸中径 小径 牙型高圆弧尺底孔尺螺纹代mm mm mm 寸 牙数 外螺纹 度 寸 寸 号 d=D p tpi d2=D2 d3 H1 r mm 英 寸
R 1/16 7.723 0.907 28 7.142 6.561 0.581 0.125 6.4 1/16:
R 1/8 9.728 0.907 28 9.147 8.566 0.581 0.125 8.4 1/8:
R 1/4 13.157 1.337 19 12.301 11.445 0.856 0.184 11.2 1/4:
R 3/8 16.662 1.337 19 15.806 14.950 0.856 0.184 14.75 3/8:
R 1/2 20.955 1.814 14 19.793 18.631 1.162 0.249 18.25 1/2:
R 3/4 26.441 1.814 14 25.279 24.117 1.162 0.249 23.75 3/4:
R 1 33.249 2.309 11 31.77 30.291 1.479 0.317 30 1:
R 1 1/4 41.910 2.309 11 40.431 38.952 1.479 0.317 38.5 1 1/4:
R 1 1/2 47.803 2.309 11 46.324 44.845 1.479 0.317 44.5 1 1/2:
R 2 59.614 2.309 11 58.135 56.656 1.479 0.317 56 2:
R 2 1/2 75.184 2.309 11 73.705 72.226 1.479 0.317 71 2 1/2:
R 3 87.884 2.309 11 86.405 84.926 1.479 0.317 85.5 3:
R 4 113.030 2.309 11 111.551 110.072 1.479 0.317 110.5 4:
R 5 138.430 2.309 11 136.951 135.472 1.479 0.317 136 5:
R 6 163.830 2.309 11 162.351 160.872 1.479 0.317 161.5 6:
55?圆柱管螺纹的型式和尺寸
British Pipe Thread (惠氏管螺纹) -- 圆柱 (BSPP/BSPF)
大径 螺距 每英寸牙中径 小径 牙型高底孔尺
mm mm mm 螺纹代基本尺数 外螺纹 度 寸
d=D p tpi d2=D2 d3 H1 mm 号 寸
G 1/8 9.728 0.907 28 9.147 8.566 0.581 8.7 1/8:
G 1/4 13.157 1.337 19 12.301 11.445 0.856 11.6 1/4:
G 3/8 16.662 1.337 19 15.806 14.95 0.856 15 3/8:
G 1/2 20.955 1.814 14 19.793 18.631 1.162 19 1/2:
G 5/8 22.911 1.814 14 21.749 20.587 1.162 20.75 5/8:
G 3/4 26.441 1.814 14 25.279 24.117 1.162 24.5 3/4:
G 7/8 30.201 1.814 14 29.039 27.877 1.162 28 7/8:
G 1 33.249 2.309 11 31.77 30.291 1.479 30.5 1:
G 1 1/8 37.897 2.309 11 36.418 34.939 1.479 35 1 1/8:
G 1 1/4 41.91 2.309 11 40.431 38.952 1.479 39.5 1 1/4:
G 1 3/8 44.323 2.309 11 42.844 41.365 1.479 41.5 1 3/8:
G 1 1/2 47.803 2.309 11 46.324 44.845 1.479 45 1 1/2:
G 1 3/4 53.746 2.309 11 52.267 50.788 1.479 51 1 3/4:
G 2 59.614 2.309 11 58.135 56.656 1.479 57 2:
G 2 1/4 65.71 2.309 11 64.231 62.752 1.479 63 2 1/4:
G 2 1/2 75.184 2.309 11 73.705 72.226 1.479 72.5 2 1/2:
G 2 3/4 81.534 2.309 11 80.055 78.576 1.479 79 2 3/4:
G 3 87.884 2.309 11 86.405 84.926 1.479 85.5 3:
G 3 1/4 93.98 2.309 11 92.501 91.022 1.479 91 3 1/4:
G 3 1/2 100.33 2.309 11 98.351 97.372 1.479 97.75 3 1/2:
G 3 3/4 106.68 2.309 11 105.201 103.722 1.479 104 3 3/4:
G 4 113.03 2.309 11 111.55 110.072 1.479 110.5 4:
G 4 1/2 125.73 2.309 11 124.251 122.772 1.479 123 4 1/2:
G 5 138.43 2.309 11 136.951 135.472 1.479 136 5:
G 5 1/2 151.13 2.309 11 149.651 148.172 1.479 148.5 5 1/2:
G 6 163.83 2.309 11 162.351 160.872 1.479 161.5 6:
英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW)
大径 螺距 每英寸牙中径 小径
mm mm mm 名义尺寸 牙型代数 外螺纹 牙型高 底孔直径
Ww d=D p tpi d2=D2 d3 H1 mm 号
BSW 1.587 0.423 60 1.315 1.050 0.270 1.15 1/16:
BSW 2.381 0.529 48 2.041 1.703 0.338 1.90 3/32:
BSW 3.175 0.635 40 2.768 2.362 0.406 2.50 1/8:
BSW 3.969 0.793 32 3.459 2.952 0.507 3.20 5/32:
BSW 4.762 1.058 24 4.084 3.407 0.677 3.70 3/16:
BSW 5.556 1.058 24 4.878 4.201 0.677 4.50 7/32:
BSW 6.350 1.270 20 5.537 4.724 0.813 5.10 1/4:
BSW 7.938 1.411 18 7.034 6.131 0.904 6.50 5/16:
BSW 9.525 1.588 16 8.509 7.492 1.017 7.90 3/8:
BSW 11.113 1.814 14 9.951 8.789 1.162 9.20 7/16:
BSW 12.700 2.117 12 11.345 9.990 1.355 10.40 1/2:
BSW 15.876 2.309 11 14.397 12.918 1.479 13.40 5/8:
BSW 19.051 2.540 10 17.424 15.798 1.627 16.25 3/4:
BSW 22.226 2.822 9 20.419 18.611 1.807 19.25 7/8:
BSW 25.400 3.175 8 23.368 21.335 2.033 22.00 1:
BSW 28.576 3.629 7 26.253 23.929 2.324 24.50 1 1/8:
BSW 31.751 3.629 7 29.428 27.104 2.324 27.25 1 1/4:
BSW 34.926 4.233 6 32.215 29.505 2.711 30.25 1 3/8:
BSW 38.100 4.233 6 35.391 32.680 2.711 33.50 1 1/2:
BSW 41.277 5.080 5 38.024 34.771 3.253 35.50 1 5/8:
BSW 44.452 5.080 5 41.199 37.946 3.253 38.50 1 3/4:
BSW 47.627 5.645 4 1/2 44.012 40.398 3.614 41.25 1 7/8:
BSW 50.802 5.645 4 1/2 47.187 43.573 3.614 44.50 2:
BSW 57.152 6.350 4 53.086 49.020 4.066 50.00 2 1/4:
BSW 63.502 6.350 4 59.436 55.370 4.066 56.00 2 1/2:
BSW 69.853 7.257 3 1/2 65.205 60.558 4.647 61.50 2 3/4:
BSW 76.203 7.257 3 1/2 71.556 66.909 4.647 68.00 3:
BSW 82.553 7.816 3 1/4 77.548 72.544 5.005 73.75 3 1/4:
BSW 88.903 7.816 3 1/4 83.899 78.894 5.005 80.00 3 1/2:
BSW 95.254 8.467 3 89.832 84.410 5.422 85.50 3 3/4:
BSW 101.604 8.467 3 96.182 90.760 5.422 92.00 4:
BSW 107.954 8.835 2 7/8 102.297 96.639 5.657 98.00 4 1/4:
BSW 114.304 8.835 2 7/8 108.647 102.990 5.657 104.20 4 1/2:
BSW 120.665 9.237 2 3/4 114.740 108.625 5.915 110.00 4 3/4:
BSW 127.005 9.237 2 3/4 121.090 115.176 5.915 116.50 5:
BSW 133.355 9.677 2 5/8 127.159 120.963 6.196 122.50 5 1/4:
BSW 139.705 9.677 2 5/8 133.509 127.313 6.196 128.50 5 1/2:
BSW 146.055 10.160 2 1/2 139.549 133.043 6.506 134.50 5 3/4:
BSW 152.406 10.160 2 1/2 145.900 139.394 6.506 141.00 6:
英制普通螺纹 (惠氏螺纹) -- 细牙 (BSW)
大径 螺距 中径 小径
mm mm mm 名义尺寸 每英寸牙数 外螺纹 牙型高 底孔直径 BSF d=D p tpi d2=D2 d3 H1 mm 牙型代号
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 BSF 7.938 1.156 22 7.199 6.459 0.739 6.80 3/8 BSF 9.525 1.27 20 8.712 7.899 0.813 8.30 7/16 BSF 11.113 1.411 18 10.209 9.304 0.904 9.70 1/2 BSF 12.700 1.588 16 11.684 10.668 1.017 11.10 9/16 BSF 14.288 1.588 16 13.272 12.256 1.017 12.70 5/8 BSF 15.875 1.814 14 14.712 13.549 1.162 14.00 11/16 BSF 17.463 1.814 14 16.300 15.137 1.162 15.50 3/4 BSF 19.050 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 BSF 25.400 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 26.50
1 1/4 BSF 31.750 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 31.50
1 1/2 BSF 38.100 3.175 8 36.068 34.036 2.033 34.50
1 5/8 BSF 41.275 3.175 8 39.243 37.211 2.033 38.00
1 3/4 BSF 44.450 3.629 7 42.126 39.802 2.324 40.50
2 BSF 50.800 3.629 7 48.476 46.152 2.324 47.00
2 1/4 BSF 57.150 4.234 6 54.440 51.730 2.711 53.00
2 1/2 BSF 63.500 4.234 6 60.790 58.080 2.711 59.00
2 3/4 BSF 69.850 4.234 6 67.140 64.430 2.711 -
3 BSF 76.200 5.08 5 72.946 69.692 3.253 -
3 1/4 BSF 82.550 5.08 5 79.296 76.042 3.253 -
3 1/2 BSF 88.900 5.645 4 1/2 85.285 81.670 3.614 -
3 3/4 BSF 95.250 5.645 4 1/2 91.635 88.020 3.614 -
4 BSF 101.600 5.645 4 1/2 97.985 94.370 3.614 -
4 1/4 BSF 107.950 6.35 4 103.886 99.822 4.066 -
螺纹底孔直径表
英制锥度管用螺纹
JIS B0203 JIS B0203 JIS B 2301 管用螺纹规格 锥度内螺纹Rc(PT) 平行管内螺纹Rp(PS) 锥度管内螺纹
计算数值 底孔直径 计算数值 底孔直径 计算数值 底孔直径 1/16 ‐28 6.230 6.2 6.490 6.5 , , 1/8 ‐28 8.235 8.2 8.495 8.5 8.191 8.2 1/4 ‐19 10.941 10.9 11.341 11.4 10.945 10.9 3/8 ‐19 14.428 14.4 14.846 14.9 14.388 14.4 1/2 ‐14 17.950 18 18.489 18.5 17.943 18 3/4 ‐14 23.349 23 23.975 24 23.305 23 1 ‐11 19.423 29 30.111 30 29.353 29 1 1/4 ‐11 37.940 38 38.772 39 37.890 38 1 1/2 ‐11 43.833 44 44.565 45 43.720 43 2 ‐11 55.412 55 56.476 56 55.406 55 2 1/2 ‐11 70.701 71 72.009 72 70.788 70 3 ‐11 83.201 83 84.709 85 83.364 83 3 1/2 ‐11 95.547 96 97.155 97 95.747 95 4 ‐11 107.834 108 109.855 110 108.322 108 5 ‐11 133.110 133 135.255 135 133.597 133 6 ‐11 158.510 159 160.655 161 158.810 158 英制平行管用螺纹(G、PF)
内螺纹最小径(参考)
管用螺纹规格 底孔钻头直径 最大尺寸 最小尺寸 G 1/16 ‐28 6.7 6.843 6.561 G(PF) 1/8 ‐28 8.7 8.848 8.566 G(PF) 1/4 ‐19 11.7 11.890 11.445 G(PF) 3/8 ‐19 15.2 15.395 14.950 G(PF) 1/2 ‐14 19 19.172 18.631 G(PF) 5/8 ‐14 21 21.130 20.589 G(PF) 3/4 ‐14 24.5 24.658 24.117 G(PF) 7/8 ‐14 28.2 28.418 27.877 G(PF) 1 ‐11 30.6 30.931 30.291 G(PF) 1 1/8 ‐11 35.2 35.579 34.939 G(PF) 1 1/4 ‐11 39.2 39.592 38.952 G(PF) 1 1/2 ‐11 45 45.485 44.845 G(PF) 1 3/4 ‐11 51 51.428 50.788 G(PF) 2 ‐11 57 57.296 56.656 G(PF) 2 1/4 ‐11 63 63.392 62.752 G(PF) 2 1/2 ‐11 72 72.866 72.226 G(PF) 2 3/4 ‐11 78.5 79.216 78.576 G(PF) 3 ‐11 85 85.566 84.926 G(PF) 3 1/2 ‐11 97 98.012 97.372 G(PF) 4 ‐11 ? 110.712 110.072 G(PF) 4 1/2 ‐11 ? 123.412 122.772 G(PF) 5 ‐11 ? 136.112 135.472 G(PF) 5 1/2 ‐11 ? 148.812 148.172 G(PF) 6 ‐11 ? 161.512 160.872 美制标准管用螺纹(NPT、NPS)
锥度螺纹(NPT)
平行螺纹(NPS) 管用螺 纹规格 底孔钻头直径
使用 铰刀 不使用 铰刀
mm inch mm inch mm inch 1/16 ‐27 5.94 0.234 6.15 0.246 6.35 0.250 1/8 ‐27 8.33 0.328 8.43 0.332 8.74 0.344 1/4 ‐18 10.72 0.422 11.13 0.438 11.13 0.438 3/8 ‐18 14.27 0.562 14.27 0.562 14.68 0.578 1/2 ‐14 17.48 0.688 17.86 0.703 18.26 0.719 3/4 ‐14 22.63 0.891 23.01 0.906 23.42 0.922 1 ‐11 1/2 28.58 1.125 28.98 1.141 29.36 1.156 1 1/4 ‐11 1/2 37.31 1.469 37.69 1.484 38.10 1.500 1 1/2 ‐11 1/2 43.26 1.703 43.66 1.719 44.45 1.750
2 ‐11 1/2 55.17 2.172 55.58 2.188 56.36 2.219
2 1/2 ‐8 65.48 2.578 66.27 2.609 67.46 2.656
螺纹尺寸表
英 制 螺 纹 尺 寸 表
圆柱管螺纹(G )钻镗孔及车外圆直径
外形尺寸
管子尺寸
公称直径 管子外径管子内径1/8 “ 1/4“ 13.5 8 3/8“ 17 10 1/2“ 21.25 15 5/8“ 3/4“ 26.75 20 7/8“ 1" 33.5 25 1/8“ 1/4“ 42.35 32 1 /8“ 1/“ 48 40 1/4“ 2“ 60 50 2/4“ 2/2“ 75.5 70 2/4“ 3“ 88.5 80 3/4“ 3/2“ 3/4“ 4“ 114.0 100 4/“ 5“ 140.0 125 5 /2“ 1 6“ 165.0 150
外径D
9.729 13.158 16.663 20.956 22.912 26.442 30.202 33.250 37.808 41.912 44.325 47.805 53.748 59.616 65.712 75.187 81.537 87.887 93.984 100.334 106.684 113.034 125.735 138.435 151.136 163.836
螺纹尺寸 内径d 1 8.567 11.446 14.951 18.632 20.588 24.119 27.878 30.293 34.941 38.954 41.367 44.847 50.791 56.659 62.755 72.230 78.580 84.930 91.026 97.376 103.727 110.077 122.777 135.478 148.178 160.829
中径d 2 9.148 12.302 15.807 19.794 21.750 25.281 29.049 31.771 36.420 40.133 42.846 46.326 52.270 58.137 64.234 73.108 80.058 86.409 92.502 98.855 105.205 111.556 124.256 136.957 149.657 162.357
每寸扣数 28 19 19 14 14 14 14 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 工艺尺寸
内螺纹钻外螺纹车外镗孔直径 圆直径 8.9 9.48-0.1 11.9 12.86-0.12 15.3 16.36-0.12 19.0 20.64-0.14 21.0 22.61-0.14 24.3 26.11-0.14 26.3 29.88-0.14 30.5 32.92-0.17 35.2 37.55-0.17 39.2 41.53-0.17 41.6 43.08-0.17 45.0 47.37-0.17 51.0 53.34-0.20 56.9 59.21-0.20 63.05 65.33-0.20 72.55 74.74-0.20 78.90 81.12-0.20 85.25 87.42-0.20 91.35 93.56-0.24 97.7 99.91-0.24 104.05 106.26-0.24 110.4 112.51-0.24 123.1 125.30-0.24 135.8 138.0-0.24 148.5 151.70-0.24 161.2 163.40-0.24
英 制 螺 纹 尺 寸 表
锥管螺纹(ZG )尺寸及钻孔直径 ( R RC )
注:圆锥度 1:16 半锥角1°47‘24“ 牙形角55°
基面上的螺纹直径
公称直径
11313
中径
9.148 12.302 15.807 19.794 25.281 31.771 46.326 58.137
外径
9.729 13.158 16.663 20.956 26.442 33.250 47.805 59.616
内径
8.567 11.446 14.951 18.632 24.119 30.293 44.847 56.659
管子端面至基面
4.75 6 6 7.5 9.5 11 14 16
公称工作长度
10 11 13 16 19 22 25 28
螺纹长度
最小工作长度 外螺纹 内螺纹
9 10 12 15 18 20 23 26
8 10 12 14 16 18 22 21
每寸扣数
28 19 19 14 14 11 11 11
内螺纹钻孔
钢/铸铁
8.4 11.2 14.7/14.5 18.4/18 23.7/23.3 30/29.6 44.5/44 56/55.5
/8“ /4” /8” /2“ /4”
1“ 11/2” 2“
布氏锥螺纹(Z )尺寸及钻孔直径 ( NPT )
注:圆锥度 1:16 半锥角1°47‘24“ 牙形角 60°
公称直径 1/8“ 1/4” 3/8“ 1/2” 3/4“ 1” 11/4“ 11/2” 2“
中径
9.519 12.443 15.926 19.772 25.117 31.461 40.218 46.287 58.325
基面上的螺纹直径
外径
10.272 13.582 17.055 21.223 26.568 33.228 41.985 48.054 60.092
内径
8.766 11.314 14.797 18.321 23.666 26.694 38.451 44.520 56.558
管子端面至基面 螺纹工作长度
4.572 5.080 6.096 8.128 8.611 10.160 10.668 10.668 11.074
6.700 10.206 10.358 13.556 13.861 17.343 17.953 18.377 19.216
每寸扣数
27 18 18 14 14 111/2 111/2 111/2 111/2
内螺纹钻孔
8.5 11 14.3 17.7 23.0 29.0 37.6 43.7 55.6
普 通 螺 纹 螺 距 值
D 2 3 4 5 6 8 10 12 (14) 16 20 24
小螺距
2
1.5
1.25
1
0.75
0.5
0.35
0.25
大螺距 0.4 0.5 0.7 0.8 1 1.25 1.50 1.75 2 2 2.5 3
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备注: 括号(14),(18),(22)内的直径在新的产品研究中不再应用。
钻头直径 = 名义直径 — 螺距
(挡圈)内、外弹性环 的主要尺寸表: