英制惠氏螺纹的型式尺寸
英制普通螺纹 -- 粗牙 -- BSW
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"
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
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
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
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
-
文章关键词： 英制惠氏螺纹
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