各类螺纹底孔的设计尺寸.docx
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各类螺纹底孔的设计尺寸.docx
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各类螺纹底孔的设计尺寸
各类螺纹底孔的设计尺寸
公制粗牙螺纹JISB0209-1982(单位:
mm)
螺纹尺寸
钻头直径
崁合度区分:
中(注1)2级(注2)下孔径
崁合度区分:
中(注1)2级(注2)内螺纹小径
最小直径
最大直径
M1X0.25
0.75
0.78(80%)
0.729
0.785
1.1X0.25
0.85
0.88(80%)
0.829
0.885
1.2X0.25
0.95
0.98(80%)
0.929
0.985
1.4X0.3
1.1
1.14(80%)
1.075
1.142
1.6X0.35
1.25
1.32(75%)
1.221
1.321
1.8X0.35
1.45
1.52(75%)
1.421
1.521
2X0.4
1.6
1.65(80%)
1.567
1.679
2.2X0.45
1.75
1.83(75%)
1.713
1.838
2.5X0.45
2.1
2.13(75%)
2.013
2.138
3X0.5
2.5
2.59(75%)
2.459
2.599
3.5X0.6
2.9
3.01(75%)
2.850
3.010
4X0.7
3.3
3.39(80%)
3.242
3.422
4.5X0.75
3.8
3.85(80%)
3.688
3.878
5X0.8
4.2
4.31(80%)
4.134
4.334
6X1
5
5.13(80%)
4.917
5.153
7X1
6
6.13(80%)
5.917
6.153
8X1.25
6.8
6.85(85%)
6.647
6.912
9X1.25
7.8
7.85(85%)
7.647
7.912
10X1.5
8.5
8.62(85%)
8.376
8.676
11X1.5
9.5
9.62(85%)
9.376
9.676
12X1.75
10.3
10.40(85%)
10.106
10.441
14X2
12
12.2(85%)
11.835
12.210
16X2
14
14.2(85%)
13.835
14.210
18X2.5
15.5
15.7(85%)
15.294
15.744
20X2.5
17.5
17.7(85%)
17.294
17.744
22X2.5
19.5
19.2(85%)
19.294
19.744
24X3
21
21.2(85%)
20.752
21.252
27X3
24
24.2(85%)
23.752
24.252
30X3.5
26.5
26.6(90%)
26.211
26.771
33X3.5
29.5
29.6(90%)
29.211
29.771
36X4
32
32.1(90%)
31.670
32.270
39X4
35
35.1(90%)
34.670
35.270
42X4.5
37.5
37.6(90%)
37.129
37.799
45X4.5
40.5
40.6(90%)
40.129
40.799
48X5
43
43.1(90%)
42.587
43.297
注
(1)M1.4以下等级:
5H、M1.6以上等级:
6H
(2)基于JISB0209-1982标准
公制细牙螺纹JISB0211-1982(单位:
mm)
螺纹尺寸
钻头直径
崁合度区分:
中(注1)2级(注2)下孔径
崁合度区分:
中(注1)2级(注2)内螺纹小径
最小直径
最大直径
M26X1.5
24.5
24.62(85%)
24.376
24.676
27X2
25
25.2(85%)
24.835
25.210
27X1.5
25.5
25.62(85%)
25.376
25.676
27X1
26
26.13(80%)
25.917
26.153
28X2
26
26.2(85%)
25.835
26.210
28X1.5
26.5
26.62(85%)
26.376
26.676
28X1
27
27.13(80%)
26.917
27.153
30X3
27
27.2(85%)
26.752
27.252
30X2
28
28.2(85%)
27.835
28.210
30X1.5
28.5
28.62(85%)
28.376
28.676
30X1
29
29.13(80%)
28.917
29.153
32X2
30
30.2(85%)
29.835
30.210
32X1.5
30.5
30.62(85%)
30.376
30.676
33X3
30
30.2(85%)
29.752
30.252
33X2
31
31.2(85%)
30.835
31.210
33X1.5
31.5
31.62(85%)
31.376
31.676
35X1.5
33.5
33.62(85%)
33.376
33.676
36X3
33
33.2(85%)
32.752
33.252
36X2
34
34.2(85%)
33.835
34.210
36X1.5
34.5
34.62(85%)
34.376
34.676
38X1.5
36.5
36.62(85%)
36.376
36.676
39X3
36
36.2(85%)
35.752
36.252
39X2
37
37.2(85%)
36.835
37.210
39X1.5
37.5
37.62(85%)
37.376
37.676
40X3
37
37.2(85%)
36.752
37.252
40X2
38
38.2(85%)
37.835
38.210
40X1.5
38.5
38.62(85%)
38.376
38.676
42X4
38
38.1(90%)
37.670
38.270
42X3
39
39.2(85%)
38.752
39.252
42X2
40
40.2(85%)
39.835
40.210
42X1.5
40.5
40.62(85%)
40.376
40.676
45X4
41
41.1(90%)
40.670
41.270
45X3
42
42.2(85%)
41.752
42.252
45X2
43
43.2(85%)
42.835
43.210
45X1.5
43.5
43.62(85%)
43.376
43.676
48X4
44
44.1(90%)
43.670
44.270
48X3
45
45.2(85%)
44.752
45.252
48X2
46
46.2(85%)
45.835
46.210
48X1.5
46.5
46.62(85%)
46.376
46.676
50X3
47
47.2(85%)
46.752
47.252
50X2
48
48.2(85%)
47.835
48.210
50X1.5
48.5
48.62(85%)
48.376
48.676
注⑴等级:
6H
(2)基于JISB0211-1982标准
美制粗牙螺纹(单位:
mm)
螺纹尺寸
钻头直径
2B级螺纹下孔径
内螺纹
最小直径
(小径
最大直径
NO.1-64UNC
1.55
1.57(65%)
1.425
1.582
2-56
1.8
1.86(65%)
1.695
1.871
3-48
2.1
2.14(65%)
1.941
2.146
4-40
2.3
2.36(70%)
2.157
2.385
5-40
2.6
2.69(70%)
2.487
2.697
6-32
2.8
2.86(75%)
2.642
2.895
8-32
3.4
3.52(75%)
3.302
3.530
10-24
3.9
3.91(80%)
3.683
3.962
12-24
4.5
4.57(80%)
4.344
4.597
1/4-20
5.1
5.25(80%)
4.979
5.257
5/16-18
6.6
6.72(80%)
6.401
6.731
3/8-16
8
8.15(80%)
7.798
8.153
7/16-14
9.4
9.50(80%)
9.144
9.550
1/2-13
10.8
11.0(80%)
10.592
11.023
9/16-12
12.2
12.3(85%)
11.989
12.446
5/8-11
13.6
13.8(85%)
13.386
13.868
3/4-10
16.5
16.8(80%)
16.307
16.840
7/8-9
19.5
19.6(85%)
19.177
19.761
1-8
22.2
22.5(85%)
21.971
22.606
11/8-7
25
25.2(85%)
24.638
25.349
11/4-7
28.2
28.4(85%)
27.813
28.524
13/8-6
30.8
31.0(85%)
30.353
31.115
11/2-6
34
34.2(85%)
33.528
34.290
13/4-5
39.5
39.8(85%)
38.964
39.827
2-4
45.2
45.3(90%)
44.679
45.593
美制细牙螺纹(单位:
mm)
螺纹尺寸
钻头直径
2B级螺纹
内螺纹小径
下孔径
最小直径
最大直径
NO.0-80UNF
1.25
1.30(65%)
1.182
1.305
1-72
1.55
1.61(65%)
1.474
1.612
2-64
1.85
1.90(65%)
1.756
1.912
3-56
2.1
2.17(70%)
2.025
2.197
4-48
2.4
2.44(70%)
2.271
2.458
5-44
2.7
2.74(70%)
2.551
2.740
6-40
2.9
3.02(70%)
2.820
3.022
8-36
3.5
3.59(75%)
3.404
3.606
10-32
4.1
4.14(80%)
3.963
4.165
12-28
4.6
4.70(80%)
4.496
4.724
1/4-28
5.5
5.56(80%)
5.360
5.588
5/16-24
6.9
7.02(80%)
6.782
7.035
3/8-24
8.5
8.61(80%)
8.382
8.636
7/16-20
9.9
10.01(80%)
9.729
10.033
1/2-20
11.5
11.60(80%)
11.329
11.607
9/16-18
12.9
13.07(80%)
12.751
13.081
5/8-18
14.5
14.65(80%)
14.351
14.681
3/4-16
17.5
17.59(85%)
17.323
17.678
7/8-14
20.5
20.6(85%)
20.270
20.675
1-12
23.2
23.5(85%)
23.114
23.571
11/8-12
26.5
26.7(80%)
26.289
26.746
11/4-12
29.5
29.9(80%)
29.464
29.921
13/8-12
32.8
33.0(85%)
32.639
33.096
11/2-12
36
36.2(85%)
35.814
36.271
缝纫机螺纹(SM)(单位:
mm)
螺纹尺寸
钻头直径
2B级螺纹下孔径
2级内螺纹小径
最小直径
最大直径
SM1/16-80
1.25
1.28(75%)
1.211
1.281
5/64-64
1.55
1.57(80%)
1.513
1.593
3/32-100
2.10
2.15(70%)
2.081
2.156
3/32-56
1.85
1.91(80%)
1.841
1.936
1/8-44
2.50
2.58(80%)
2.485
2.605
1/8-40
2.45
2.52(80%)
2.421
2.551
9/64-40
2.85
2.91(80%)
2.818
2.948
11/64-40
3.65
3.71(80%)
3.612
3.742
3/16-32
3.90
3.94(80%)
3.820
3.980
3/16-28
3.70
3.82(80%)
3.684
3.844
7/32-32
4.70
4.73(80%)
4.614
4.774
15/64-28
4.90
5.01(80%)
4.875
5.055
1/4-40
5.60
5.69(80%)
5.596
5.726
1/4-28
5.30
5.41(80%)
5.272
5.452
缝纫机螺纹(SM)(单位:
mm)
螺纹尺寸
钻头直径
2B级螺纹下孔径
2级内螺纹小径
最小直径
最大直径
SM1/4-24
5.10
5.25(80%)
5.086
5.266
9/32-28
6.10
6.20(80%)
6.066
6.256
9/32-20
5.70
5.82(80%)
5.634
5.824
5/16-28
6.90
6.00(80%)
6.860
7.050
5/16-24
6.70
6.84(80%)
6.674
6.864
5/16-18
6.30
6.38(85%)
6.254
6.444
3/8-28
8.50
8.58(80%)
8.447
8.637
3/8-18
7.90
7.97(85%)
7.843
8.053
7/16-28
10.10
10.17(80%)
10.034
10.224
7/16-16
9.30
9.36(85%)
9.220
9.440
1/2-28
11.70
11.76(80%)
11.622
11.812
1/2-20
11.30
11.38(80%)
11.190
11.410
1/2-12
10.30
10.36(85%)
10.180
10.420
英制粗牙螺纹(单位:
mm)
螺纹尺寸
下孔径
嵌合率
A列(硬材质)
B列(软材质)
A列直径
B列直径
内螺纹最小径
内螺纹最大径
W1/8
2.6
2.5
70.7
83.0
70.0
88.3
3/16
3.7
3.6
78.4
85.8
70.0
88.3
1/4
5.1
5.0
76.9
83.0
70.5
88.3
5/16
6.6
6.5
74.0
99.5
70.1
88.4
3/8
8.0
7.9
75.0
80.0
69.5
88.2
7/16
9.4
9.3
73.7
80.0
69.0
88.8
1/2
10.7
10.5
73.8
81.2
69.0
88.2
9/16
12.3
12.0
73.4
84.4
69.0
88.2
5/8
13.7
13.5
73.5
80.3
69.6
88.5
3/4
16.7
16.5
72.3
78.4
69.6
88.3
7/8
19.5
19.3
75.4
80.9
70.1
88.4
1
22.4
22.0
73.8
83.6
71.0
88.2
11/8
25.0
24.8
76.9
81.3
72.0
88.4
11/4
28.3
28.0
74.3
80.7
72.0
88.4
13/8
30.5
30.3
81.6
85.3
73.8
88.6
11/2
33.8
33.5
79.3
84.8
73.8
88.6
15/8
36.0
35.7
81.1
85.7
74.8
88.3
13/4
39.2
39.0
80.7
83.8
74.8
88.3
17/8
41.8
41.5
80.6
84.7
74.7
88.4
2
45.0
44.7
80.2
84.4
74.7
88.4
英制管用螺纹(单位:
mm)
管用螺纹尺寸
JISB0203
JISB2301
锥管内螺纹Rc(PT)
平行内螺纹Rp(PS)
锥管内螺纹
计算值
下孔径
计算值
下孔径
计算值
下孔径
1/16
6.230
6.2
6.490
6.5
一
一
1/8
8.235
8.2
8.495
8.5
8.191
8.2
1/4
10.941
10.9
11.341
11.4
10.945
10.9
3/8
14.428
14.4
14.846
14.9
14.388
14.4
1/2
17.950
18
18.489
18.5
17.943
18
3/4
23.349
23
23.975
24
23.305
23
1
29.423
29
30.111
30
29.353
29
11/4
37.940
38
38.772
39
37.890
38
11/2
43.833
44
44.565
45
43.720
43
2
55.412
55
56.476
56
55.406
55
21/2
70.701
71
72.009
72
70.788
70
3
83.201
83
84.709
85
83.364
83
31/2
95.547
96
97.155
97
95.747
95
4
107.834
108
109.855
110
108.322
108
5
133.110
133
135.255
135
133.597
133
6
158.510
159
160.655
161
158.810
158
7
183.360
183
185.954
186
8
208.560
209
211.354
212
9
233.960
234
236.754
237
10
259.166
259
262.154
262
12
309.747
310
312.875
313
英制平行管用螺纹PF(G)(单位:
mm)
螺纹
下孔径
内螺纹小径(参
考)
尺寸
大径
标准嵌
合
高度H
系列
100
95
90
85
80
75
70
65
60
最小直径
最大直径
G1/16
7.723
0.5808
6.56
6.62
6.68
6.74
6.79
6.85
6.91
6.97
7.03
6.843
6.561
G(PF)1/8
9.728
8.57
8.62
8.68
8.74
8.80
8.86
8.92
8.97
9.03
8.848
8.566
1/4
13.157
0.8560
11.53
11.62
11.70
11.79
11.87
11.96
12.04
12.13
11.890
11.445
3/8
16.662
14.95
15.04
15.12
15.21
15.29
15.38
15.46
15.55
15.64
15.395
14.950
1/2
20.955
1.1618
18.8
18.9
19.0
19.1
19.2
19.3
19.4
19.6
19.172
18.631
5/8
22.911
ft
20.6
20.7
20.8
20.9
21.0
21.2
21.3
21.4
21.5
21.130
20.589
3/4
26.441
〃
24.2
24.4
24.5
24.6
24.7
24.8
24.9
25.0
24.658
24.117
7/8
30.201
ft
27.9
28.0
28.1
28.2
28.3
38.5
28.6
28.7
28.8
28.418
27.877
1
33.249
14.786
30.3
30.4
30.6
30.7
30.9
31.0
31.2
31.3
31.5
30.931
30.291
11/8
37.897
ft
35.1
35.2
35.4
35.5
35.7
35.8
35.9
36.5
35.579
34.939
11/4
41.910
〃
39.0
39.1
39.2
39.4
39.6
39.7
39.8
40.0
40.1
39.592
38.952
13/8
44.323
ft
41.4
41.5
41.7
41.8
42.0
42.1
42.2
42.4
42.6
42.005
41.365
11/2
47.803
〃
45.0
45.1
45.3
45.4
45.6
45.7
45.9
46.0
45.
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