60°圆锥管螺纹的基本牙型和基本尺寸(GB/T12716-1991) (mm)
 P＝25.4／n H＝0.866025P
h＝0.8P
f＝0.033P
|
螺纹
尺寸
代号
|
每25.4mm
内的螺
纹牙数
n
|
基面上的基本直径
|
基准距离L1
|
装配余量L3
|
管子外径
|
圆锥外螺
纹小端面
处的螺纹
小 径
|
大径
(基准直径)
d＝D
|
中径
d2＝D2
|
小径
d1＝D1
|
距离
|
牙数
|
距离
|
牙数
|
1／16
|
27
|
7.895
|
7.142
|
6.389
|
4.064
|
4.32
|
2.822
|
3
|
7.938
|
6.135
|
1／8
|
27
|
10.242
|
9.489
|
8.736
|
4.102
|
4.36
|
2.822
|
3
|
10.287
|
8.480
|
1／4
|
18
|
13.616
|
12.487
|
11.358
|
5.786
|
4.10
|
4.234
|
3
|
13.716
|
10.997
|
3／8
|
18
|
17.055
|
15.926
|
14.797
|
6.096
|
4.32
|
4.234
|
3
|
17.145
|
14.416
|
1／2
|
14
|
21.223
|
19.772
|
18.321
|
8.128
|
4.48
|
5.443
|
3
|
21.336
|
17.813
|
3／4
|
14
|
26.568
|
25.117
|
23.666
|
8.611
|
4.75
|
5.443
|
3
|
26.670
|
23.128
|
1
|
11.5
|
33.228
|
31.461
|
29.694
|
10.160
|
4.60
|
6.627
|
3
|
33.401
|
29.059
|
|
|
11.5
|
41.985
|
40.218
|
38.451
|
10.668
|
4.83
|
6.627
|
3
|
42.164
|
37.784
|
|
|
11.5
|
48.054
|
46.287
|
44.520
|
10.688
|
4.83
|
6.627
|
3
|
48.260
|
43.854
|
2
|
11.5
|
60.092
|
58.325
|
56.558
|
11.074
|
5.01
|
6.627
|
3
|
60.325
|
55.866
|
|
|
8
|
72.699
|
70.159
|
67.619
|
17.323
|
5.46
|
6.350
|
2
|
73.025
|
66.536
|
3
|
8
|
88.608
|
86.068
|
83.528
|
19.456
|
6.13
|
6.350
|
2
|
88.900
|
82.312
|
|
|
8
|
101.316
|
98.776
|
96.236
|
20.853
|
6.57
|
6.350
|
2
|
101.600
|
94.932
|
4
|
8
|
113.973
|
111.433
|
108.893
|
21.438
|
6.75
|
6.350
|
2
|
114.300
|
107.553
|
5
|
8
|
140.952
|
138.412
|
135.872
|
23.800
|
7.50
|
6.350
|
2
|
141.300
|
134.384
|
6
|
8
|
167.792
|
165.252
|
162.712
|
24.333
|
7.66
|
6.350
|
2
|
168.275
|
161.191
|
8
|
8
|
218.441
|
215.901
|
213.361
|
27.000
|
8.50
|
6.350
|
2
|
219.075
|
211.673
|
10
|
8
|
272.312
|
269.772
|
267.232
|
30.734
|
9.68
|
6.350
|
2
|
273.050
|
265.311
|
12
|
8
|
323.032
|
320.492
|
317.952
|
34.544
|
10.88
|
6.350
|
2
|
323.850
|
315.793
|
