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英制普通螺紋 (惠氏螺紋) -- 粗牙 (bsw)
名義尺寸
ww
牙型代號
大徑
mm
d=d
螺距
mm
p
每英寸牙數(shù)
tpi
中徑
mm
d2=d2
小徑
外螺紋
d3
牙型高
h1
底孔直徑
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
英制普通螺紋 -- 細(xì)牙 -- bsf

								英制普通螺紋 (惠氏螺紋) -- 細(xì)牙 (bsw)
名義尺寸 bsf	牙型代號	大徑 mm d=d	螺距 mm p	每英寸牙數(shù) tpi	中徑 mm d2=d2	小徑 外螺紋 d3	牙型高 h1	底孔直徑 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	-