不銹鋼鋼絲螺套（也稱(chēng)為螺紋護(hù)套、鋼絲護(hù)套、螺紋絲套、牙套、螺紋襯套、不銹鋼螺套等）是一種由高精度的菱形不銹鋼絲精制成形的螺旋線(xiàn)圈，為高精度內(nèi)外螺紋同心體的新型內(nèi)螺紋緊固件。
一、鋼絲螺套的標(biāo)記方法
不銹鋼鋼絲螺套標(biāo)記方法主要有兩種形式，分別是規(guī)格法和標(biāo)準(zhǔn)法，螺紋護(hù)套鋼絲螺套標(biāo)記方法實(shí)際上表達(dá)的就是鋼絲螺套的直徑、螺距和長(zhǎng)度三個(gè)參數(shù)。此處的直徑和長(zhǎng)度指的是安裝后的內(nèi)螺紋直徑和安裝后形成的實(shí)際螺紋長(zhǎng)度。
1 規(guī)格法：
① FR( 普通型 ) MD （直徑）× P （螺距） -nD ( 直徑 )
② SL( 鎖緊型 ) MD （直徑）× P （螺距） -nD ( 直徑 )
2 標(biāo)準(zhǔn)法：
D( 直徑 ) × P( 螺距 ) × N( 自由狀態(tài)下鋼絲螺套圈數(shù) )
二、鋼絲螺套的規(guī)格參數(shù)表
應(yīng)該如何選用不銹鋼鋼絲螺套呢？不銹鋼鋼絲螺套在選用時(shí)可根據(jù)相應(yīng)的規(guī)格型號(hào)參數(shù)進(jìn)行選擇，用戶(hù)可以對(duì)照鋼絲螺套規(guī)格參數(shù)表進(jìn)行正確的選用到合適的產(chǎn)品。鋼絲螺套、螺紋護(hù)套的規(guī)格參數(shù)有公制和英制兩種尺寸參數(shù)。
公制不銹鋼鋼絲螺套規(guī)格參數(shù)
螺紋規(guī)格d×p
k×d
鋼絲螺套安裝后長(zhǎng)度L(mm)
鉆頭直徑do(mm)
自由狀態(tài)下外徑Dz(mm)
自由狀態(tài)螺套圈數(shù)N(≈)
M2×0.4
1d
2
2
2.6-2.8
2.9
M2.5×0.45
1d
2.5
2.6
3.3-3.5
3.5
M3×0.5
1d
3
3.1
3.8-4.0
4
M4×0.7
1d
4
4.1
5.15-5.35
3.7
M5×0.8
1d
5
5.2
6.35-6.6
4.3
M6×1
1d
6
6.2
7.6-7.85
4.2
M7×1
1d
7
7.2
8.65-8.9
5.4
M8×1
1d
8
8.2
9.85-10.1
6.1
M8×1.25
1d
8
8.3
9.85-10.1
4.7
M10×1
1d
10
10.2
12.1-12.5
7.6
M10×1.5
1d
10
10.3
12.1-12.5
5
M12×1.5
1d
12
12.4
14.4-14.8
6.2
M12×1.75
1d
12
12.4
14.4-14.8
5.2
M14×1.5
1d
14
14.4
17.2-17.7
7
M16×1.5
1d
16
16.4
19.4-19.9
8.3
M16×2
1d
16
16.5
19.4-19.9
6.0
M18×1.5
0.5d
9
18.4
21.5-22
4.4
M20×1.5
0.75d
15
20.4
23.7-24.2
8
M20×2.5
1d
20
20.5
23.7-24.2
6.3
M22×1.5
0.75d
16.5
22.4
26.3-26.8
8.6
M24×1.5
0.75d
18
24.4
28.6-29.1
9.5
M24×3
1d
24
24.6
28.6-29.1
6.3
M26×1.5
0.5d
13
26.4
30.5-31
6.7
M27×1.5
0.5d
13.5
27.4
32.2-32.7
6.7
M27×2
0.5d
13.5
27.5
32.2-32.7
6.7
M30×1..5
0.5d
15
30.4
35.2-35.7
7.8
M30×3.5
1d
30
30.7
35.2-35.7
7
M33×1.5
0.5d
16.6
33.4
38.3-38.8
9.1
M39×2
0.5d
19.5
39.5
45.1-45.6
7.9
M60×4
0.5d
32
64.9
65-66
7.3
鋼絲螺套、螺紋護(hù)套的規(guī)格參數(shù)有公制和英制兩種，這兩種參數(shù)表如下：
符號(hào)說(shuō)明：
d--鋼絲螺套公稱(chēng)直徑（螺釘公稱(chēng)直徑） L—鋼絲螺套公稱(chēng)長(zhǎng)度（安裝后的螺紋長(zhǎng)度） P--螺距
do--鉆絲套安裝用鉆頭直徑 Dz--鋼絲螺套自由狀態(tài)下外徑 N--鋼絲螺套自由狀態(tài)下圈數(shù)
1、公制鋼絲螺套規(guī)格、螺紋護(hù)套規(guī)格參數(shù)表
1.5d
2d
3
4
4.7
6.5
1.5d
2d
3.75
5
5.9
8.1
1.5d
2d
4.5
6
6.3
8.7
1.5d
2d
6
8
6
8.4
1.5d
2d
7.5
10
6.9
9.7
1.5d
2d
9
12
7
9.6
1.5d
2d
10.5
14
8.5
11.6
1.5d
2d
12
16
9.5
13
1.5d
2d
12
16
7.4
10.6
1.5d
2d
15
20
12
16.3
1.5d
2d
15
20
8
11.2
1.5d
2d
18
24
9.8
13.5
1.5d
2d
18
24
8.4
11.7
1.5d
2d
21
28
11.2
15.3
1.5d
2d
24
32
13
17.7
1.5d
2d
24
32
9.7
13.3
1.0d
1.5d
18
27
9.5
15
1d
1.5d
20
30
10.7
16.7
1.5d
2d
30
40
10
13.7
1d
1.5d
22
33
11.7
18
1d
1.5d
24
36
13
19.8
1.5d
2d
36
48
10
14
0.75d
1d
19.5
26
10.7
14.6
0.75d
1d
20.3
27
10.7
14.6
0.75d
1d
20.3
27
10.7
14.6
0.75d
1d
22.5
30
12.2
16.5
1.5d
2d
45
60
11
14.9
0.75d
1d
24.5
33
13.7
18.3
0.75d
1d
29.25
39
12.2
16.6
1d
64
15.6
2、英制鋼絲螺套規(guī)格、螺紋護(hù)套規(guī)格參數(shù)表
|
英制不銹鋼鋼絲螺套規(guī)格參數(shù) |
|||||
|
螺紋規(guī)格d×p |
k×d |
鋼絲螺套安裝后長(zhǎng)度L(mm) |
鉆頭直徑do(mm) |
自由狀態(tài)下外徑Dz(mm |
自由狀態(tài)螺套圈數(shù)N(≈) |
|
4-40 |
1d |
2.9 |
3 |
3.66-4.04 |
3.2 |
|
5-40 |
1d |
3.2 |
3.4 |
4.01-4.39 |
3.7 |
|
6-32 |
1d |
3.5 |
3.7 |
4.52-4.90 |
2.8 |
|
8-32 |
1d |
4.2 |
4.4 |
5.20-5.56 |
4.0 |
|
10-24 |
1d |
4.8 |
5.1 |
6.19-6.58 |
3.3 |
|
12-24 |
1d |
5.5 |
5.8 |
6.86-7.24 |
4.0 |
|
1/4"-20 |
1d |
6.4 |
6.7 |
7.86-8.38 |
3.9 |
|
3/8"-16 |
1d |
9.5 |
9.9 |
11.48-11.99 |
4.8 |
|
7/16"-14 |
1d |
11.1 |
11.6 |
13.36-13.99 |
4.9 |
|
1/2"-13 |
1d |
12.7 |
13.1 |
15.16-15.8 |
5.2 |
|
5/8"-11 |
1d |
15.9 |
16.4 |
18.84-19.48 |
5.7 |
|
3/4"-10 |
1d |
19.1 |
19.6 |
22.36-23.00 |
6.3 |
|
1"-8 |
1d |
25.4 |
26.1 |
29.62-30.38 |
6.8 |
|
8-36 |
1d |
4.2 |
4.3 |
5.18-5.68 |
4.5 |
|
10-32 |
1d |
4.83 |
5.0 |
5.99-6.50 |
4.1 |
|
1/4"-28 |
1d |
6.35 |
6.6 |
7.77-8.28 |
5.0 |
|
5/16"-24 |
1d |
7.9 |
8.2 |
9.65-10.16 |
5.9 |
|
3/8"-24 |
1d |
9.5 |
9.8 |
11.37-11.88 |
7.3 |
|
7/16"-20 |
1d |
11.1 |
11.4 |
13.3-13.7 |
7.0 |
|
1/2"-20 |
1d |
12.7 |
13.0 |
15.03-15.67 |
7.9 |
|
9/16"-18 |
1d |
14.3 |
14.6 |
16.91-17.55 |
7.9 |
|
5/8"-18 |
1d |
15.9 |
16.2 |
18.61-19.25 |
9.4 |
|
3/4"-16 |
1d |
19.1 |
19.4 |
22.25-22.88 |
10.1 |
|
7/8"-14 |
1d |
22.2 |
22.6 |
25.93-26.69 |
10.3 |
|
1"-14 |
1d |
25.4 |
25.9 |
29.69-30.45 |
11.8 |
|
1"-12 |
1d |
25.4 |
30.0 |
29.69-30.45 |
10.0 |