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
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
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＂
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
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＂
41.91
2.309
11
40.431
38.952
1.479
0.317
38.5
R 1 1/2
11
86.405
84.926
1.479
0.317
85.5
R 4
4＂
113.03
2.309
11
111.551
110.072
1.479
0.317
110.5
R 5
5＂
138.43
2.309
11
136.951
135.472
1.479
0.317
136
R 6
6＂
163.83
2.309
11
162.351
160.872
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
6＂
BSW
152.406
10.16
2 1/2
145.9
139.394
6.506
141
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
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
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
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
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
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＂
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
2.309
11
46.324
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
1.058
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