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注：1、钢丝螺套的自由状态圈数N，可由使用单位设计决定。
2、用于盲孔的钢丝螺套无折断槽h。
3、自由状态下的外径Dz，为装配之前的尺寸。 |
| 螺纹公称直径 D
X P |
自由状态外径 Dz |
| 可供选择的公称长度 |
最小
min |
最大
max |
| 1 D |
1.5 D |
2 D |
2.5 D |
3 D |
| 2 X 0.4 |
2.62 |
2.76 |
| *
2.5 X 0.45 |
3.22 |
3.40 |
| *
3 X 0.5 |
3.82 |
4.00 |
| *
4 X 0.7 |
5.12 |
5.30 |
| *
5 X 0.8 |
6.32 |
6.54 |
| *
6 X 1 |
7.62 |
7.84 |
| *
7 X 1 |
8.72 |
8.94 |
| *
8 X 1 |
9.82 |
10.04 |
| *
8 X 1.25 |
10.06 |
10.34 |
| *
10 X 1 |
12.08 |
12.36 |
| 10X
1.25 |
12.10 |
12.50 |
| *
10 X 1.5 |
12.52 |
12.80 |
| *
12 X 1.5 |
14.68 |
14.96 |
| *
12 X 1.75 |
14.96 |
15.20 |
| *
14 X 1.5 |
16.92 |
17.20 |
| *
16 X 1.5 |
19.18 |
19.52 |
| *
16 X 2 |
19.40 |
19.90 |
| 18X
1.5 |
21.48 |
21.82 |
| *
20 X 1.5 |
23.82 |
24.16 |
| 20X
2.5 |
23.70 |
24.20 |
| 22X
1.5 |
26.00 |
26.52 |
| 24X
1.5 |
28.40 |
28.92 |
| *
24 X 2 |
28.50 |
29.00 |
| 24X
3 |
28.60 |
29.10 |
| 27X
1.5 |
32.02 |
32.64 |
| 27X
2 |
31.94 |
32.56 |
| 30X
1.5 |
35.74 |
36.36 |
| *
30 X 2 |
35.50 |
36.12 |
| 30X
3.5 |
35.20 |
35.75 |
| 33X
1.5 |
39.56 |
40.18 |
| 33X
2 |
39.12 |
39.74 |
| 36X
1.5 |
42.10 |
42.60 |
| 39X
2 |
45.10 |
45.60 |
| 45X
1.5 |
52.50 |
53.50 |
| 48X
3 |
55.17 |
56.07 |
丝套螺
纹规格
dXp |
丝套螺纹公称长度
Xd |
丝套用螺纹孔参数 |
自由状态下丝套数 |
| 螺孔
浓度
（mm） |
钻孔时
选用外
头直径
（mm） |
丝套
外径
（mm） |
丝套
圈数
（≈） |
| 2 X 0.4 |
2d
2.5d
3d |
4
5
6 |
2.1 |
2.6-2.8 |
7.7
9.9
12.2 |
| 2.5 X 0.45 |
2d
2.5d
3d |
5
6.5
7.5 |
2.6 |
3.2-3.45 |
9.6
11.1
13.6 |
| ZST
* 3 X 0.5 |
1d
1.5d
2d
2.5d
3d |
3
4.5
6
7.5
9 |
3.2 |
3.82-4.00 |
3.9
6.3
8.7
11.0
13.5 |
| ZST4
X 0.7 |
1d
1.5d
2d
2.5d
3d |
4
6
8
10
12 |
4.2 |
5.15-5.35 |
3.7
6.1
8.4
11.0
13.2 |
| ZST5
X 0.8 |
1d
1.5d
2d
2.5d
3d |
5
7.5
10
12.5
15 |
5.2 |
6.35-6.6 |
4.3
6.9
9.7
12.3
15.0 |
| ZST6
X 1 |
1d
1.5d
2d
2.5d
3d |
6
9
12
15
18 |
6.3 |
7.6-7.85 |
4.2
6.9
9.6
12.3
14.6 |
| ZST8
X 1.25 |
1d
1.5d
2d
2.5d
3d |
8
12
16
20
24 |
8.4 |
9.85-10.1 |
4.7
7.4
10.6
13.5
16.4 |
| ZST10 X 1.25 |
1d
1.5d
2d |
10
15
20 |
10.3 |
12.1-12.4 |
6.0
9.7
13.4 |
| ZST10 X 1.5 |
1d
1.5d
2d
2.5d
3d |
10
15
20
25
30
|
10.4 |
12.1-12.5 |
5.0
8.1
11.2
14.2
17.2 |
| ZST12 X 1.25 |
1d
1.5d
2d |
12
18
24 |
12.4 |
14.2-14.5 |
7.4
11.6
15.9 |
| ZST12 X 1.75 |
1d
1.5d
2d
2.5d
3d |
12
18
24
30
36 |
12.5 |
14.4-14.8 |
5.2
8.4
11.7
14.7
18.0 |
| ZST14 X 1.25 |
1d
1.5d
2d |
14
21
28 |
14.4 |
17.2-17.4 |
8.4
12.4
16.3 |
| ZST14 X 1.5 |
1d
1.5d
2d |
14
21
28 |
14.5 |
17.2-17.7 |
7.1
11.2
15.3 |
| ZST14 X 2 |
1d
1.5d
2d |
14
21
28 |
14.4 |
17.2.17.7 |
5.2
8.3
11.5 |
| ZST16 X 2 |
1d
1.5d
2d
2.5d |
16
24
32
40 |
16.5 |
19.4-19.9 |
6.1
9.7
13.8
16.8 |
| ZST18
X 1.5 |
0.75d
1d
1.5d
2d |
13.5
18
27
36 |
18.5 |
21.5-22 |
7.0
9.5
14.9
20.2 |
| ZST18
X 2.5 |
1d
1.5d
2d |
18
27
36 |
18.5 |
21.84-22.24 |
6
9.5
12.8 |
| ZST20
X 1.5 |
1d
1.5d
2d |
20
30
40 |
20.5 |
23.7-24.2 |
10.7
16.7
22.4 |
| ZST20
X 2.5 |
1d
1.5d
2d |
20
30
40 |
20.75 |
23.7-24.2 |
6.3
10.0
13.7 |
| ZST22
X 1.5 |
1d
1.5d |
22
33 |
22.5 |
26.3-26.8 |
11.7
18.1 |
| ZST24
X 1.5 |
1d
1.5d
2d
2.5d
3d |
24
36
48
60
72 |
24.5 |
28.6-29.1 |
12.9
19.8
26.7
33.6
40.6 |
| ZST24
X 3 |
1d
1.5d
2d |
24
30
40 |
24.8 |
28.6-29.1 |
6.3
10.0
14.0 |
| 27 X
1.5 |
0.75d
1d
1.5d |
20.3
27
40.5 |
27.5 |
32.2-32.7 |
11.0
14.6
18.3 |
| 27 X
2 |
0.75d
1d
1.5d |
20.3
27
40.5 |
27.6 |
32.2-32.7 |
8.0
10.8
16.8 |
| 30 X
3.5 |
1d
1.5d
2d |
30
45
60 |
31.0 |
35.2-35.7 |
7
11
14.9 |
| 36 X
1.5 |
1d |
36 |
36.5 |
41.2-41.9 |
20 |
| 39 X
2 |
|
|
|
45.10-45.60 |
|
| 45 X
1.5 |
|
|
|
52.50-53.50 |
|
| 48 X
3 |
|
|
|
55.17-56.07 |
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注：（1）带
* 号者为除普通型外，还有锁紧型：普通型表示ST，锁紧型表示为ZST。
（2）根据用户需要和要求，我厂还可以试制本系列以外的各种钢丝螺套。
（3）公称长度按标准选择4~20之间的任意偶数圈，还可以按公称直径的倍数选择。
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