Nord-Lock碳鋼墊片是什么
防松墊片，也叫防松墊圈，制鎖墊圈，鎖緊墊圈，組合鎖緊墊圈等。1982年，瑞典Nord-Lock AB公司開始致力于生產一種為螺栓連接設計的優良的**系統，其名字就叫Nord-Lock，中文意思為防松墊圈。這種墊圈提供了一種不會受任何振動或動力負載影響的螺栓**鎖緊系統，這種螺栓**系統結構單一，只由具有特殊凸輪齒面并預先組合的一對墊圈構成。經過不斷的技術更新和研發，Nord-Lock防松墊圈逐漸成為目前世界上*高效的一種螺栓**緊固系統。Nord-Lock碳鋼墊片，由EN 1.7182或者等同材質制作，表面鍍鋅，淬火處理。
Nord-Lock碳鋼墊片由兩片相同的墊圈組成一套，每片的上、下面帶有不同鋸齒。一面為凸輪狀大齒，其斜坡角度α大于螺栓螺紋角β，另一面為較密小齒。墊圈安裝時，要大齒面相對，成對安裝。小齒面分別與螺母和被緊固件接觸。擰緊螺栓連接緊固件后，振動發生時，大齒面會錯動抬升，并由α角大于β角的原理來鎖住螺栓，使之不能松動。
Nord-Lock碳鋼墊片不是利用摩擦力而是利用機械結構鎖緊。它是由一對有相互咬合的齒面的墊圈構成。相互咬合的角度“α”大于螺紋的升角“b”，這樣就有效地阻止螺絲的松動。
Nord-Lock碳鋼墊片規格表：
|
Nord-Lock碳鋼墊片規格表
|
|
墊片尺寸
|
螺栓尺寸
|
內徑d1
（mm）
|
外徑d2
（mm）
|
厚度T
(mm)
|
*小包裝
（對）
|
約重
Kg/100對
|
|
公制
|
美制
|
|
NL3
|
M3
|
#5
|
3.4
|
7.0
|
1.8
|
200
|
0.03
|
|
NL3.5
|
M3.5
|
#6
|
3.9
|
7.6
|
1.8
|
200
|
0.04
|
|
NL3.5sp
|
M3.5
|
#6
|
3.9
|
9.0
|
1.8
|
200
|
0.06
|
|
NL4
|
M4
|
#8
|
4.4
|
7.6
|
1.8
|
200
|
0.04
|
|
NL4sp
|
M4
|
#8
|
4.4
|
9.0
|
1.8
|
200
|
0.06
|
|
NL5
|
M5
|
#10
|
5.4
|
9.0
|
1.8
|
200
|
0.05
|
|
NL5sp
|
M5
|
#10
|
5.4
|
10.8
|
1.8
|
200
|
0.11
|
|
NL6
|
M6
|
|
6.5
|
10.8
|
1.8
|
200
|
0.07
|
|
NL6sp
|
M6
|
|
6.5
|
13.5
|
2.5
|
200
|
0.20
|
|
NL1/4"
|
|
1/4"
|
7.2
|
11.5
|
1.8
|
200
|
0.08
|
|
NL1/4"sp
|
|
1/4"
|
7.2
|
13.5
|
2.5
|
200
|
0.18
|
|
NL8
|
M8
|
5/16"
|
8.7
|
13.5
|
2.5
|
200
|
0.15
|
|
NL8sp
|
M8
|
5/16"
|
8.7
|
16.6
|
2.5
|
200
|
0.28
|
|
NL3/8"
|
|
3/8"
|
10.3
|
16.6
|
2.5
|
200
|
0.23
|
|
NL3/8"sp
|
|
3/8"
|
10.3
|
21.0
|
2.5
|
200
|
0.48
|
|
NL10
|
M10
|
|
10.7
|
16.6
|
2.5
|
200
|
0.22
|
|
NL10sp
|
M10
|
|
10.7
|
21.0
|
2.5
|
200
|
0.47
|
|
NL11
|
M11
|
7/16"
|
11.4
|
18.5
|
2.5
|
200
|
0.29
|
|
NL12
|
M12
|
|
13.0
|
19.5
|
2.5
|
200
|
0.29
|
|
NL12sp
|
M12
|
|
13.0
|
25.4
|
3.4
|
100
|
0.93
|
|
NL1/2"
|
|
1/2"
|
13.5
|
19.5
|
2.5
|
200
|
0.27
|
|
NL1/2"sp
|
|
1/2"
|
13.5
|
25.4
|
3.4
|
100
|
0.90
|
|
NL14
|
M14
|
9/16"
|
15.2
|
23.0
|
3.4
|
100
|
0.56
|
|
NL14sp
|
M14
|
9/16"
|
15.2
|
30.7
|
3.4
|
100
|
1.41
|
|
NL16
|
M16
|
5/8"
|
17.0
|
25.4
|
3.4
|
100
|
0.67
|
|
NL16sp
|
M16
|
5/8"
|
17.0
|
30.7
|
3.4
|
100
|
1.28
|
|
NL18
|
M18
|
|
19.5
|
29.0
|
3.4
|
100
|
0.85
|
|
NL18sp
|
M18
|
|
19.5
|
34.5
|
3.4
|
100
|
1.58
|
|
NL3/4"
|
|
3/4"
|
20.0
|
30.7
|
3.4
|
100
|
1.05
|
|
NL3/4"sp
|
|
3/4"
|
20.0
|
39.0
|
3.4
|
100
|
2.20
|
|
NL20
|
M20
|
|
21.4
|
30.7
|
3.4
|
100
|
0.93
|
|
NL20sp
|
M20
|
|
21.4
|
39.0
|
3.4
|
100
|
2.03
|
|
NL22
|
M22
|
7/8"
|
23.4
|
34.5
|
3.4
|
100
|
1.29
|
|
NL22sp
|
M22
|
7/8"
|
23.4
|
42.0
|
4.6
|
50
|
3.31
|
|
NL24
|
M24
|
|
25.3
|
39.0
|
3.4
|
100
|
1.68
|
|
NL24sp
|
M24
|
|
25.3
|
48.5
|
4.6
|
50
|
4.51
|
|
NL1"
|
|
1"
|
27.9
|
39.0
|
3.4
|
100
|
1.53
|
|
NL1"sp
|
|
1"
|
27.9
|
48.5
|
4.6
|
50
|
4.20
|
|
NL27
|
M27
|
|
28.4
|
42.0
|
5.8
|
50
|
3.29
|
|
NL27sp
|
M27
|
|
28.4
|
48.5
|
5.8
|
25
|
5.39
|
|
NL30
|
M30
|
1 1/8"
|
31.4
|
47.0
|
5.8
|
50
|
4.20
|
|
NL30sp
|
M30
|
1 1/8"
|
31.4
|
58.5
|
6.6
|
25
|
8.96
|
|
NL33
|
M33
|
1 1/4"
|
34.4
|
48.5
|
5.8
|
25
|
3.97
|
|
NL33sp
|
M33
|
1 1/4"
|
34.4
|
58.5
|
6.6
|
25
|
8.31
|
|
NL36
|
M36
|
1 3/8"
|
37.4
|
55.0
|
6.6
|
25
|
5.59
|
|
NL36sp
|
M36
|
1 3/8"
|
37.4
|
63.0
|
6.6
|
25
|
9.15
|
|
NL39
|
M39
|
1 1/2"
|
40.4
|
58.5
|
6.6
|
25
|
6.28
|
|
NL42
|
M42
|
|
43.2
|
63.0
|
6.6
|
25
|
7.47
|
|
NL45
|
M45
|
1 3/4"
|
46.2
|
70.0
|
7
|
25
|
10.20
|
|
NL48
|
M48
|
|
49.6
|
75.0
|
7
|
25
|
12.00
|
|
NL52
|
M52
|
2"
|
53.6
|
80.0
|
7
|
25
|
13.00
|
|
NL56
|
M56
|
2 1/4"
|
59.1
|
85.0
|
7
|
10
|
13.50
|
|
NL60
|
M60
|
|
63.1
|
90.0
|
7
|
10
|
15.20
|
|
NL64
|
M64
|
2 1/2"
|
67.1
|
95.0
|
7
|
10
|
16.70
|
|
NL68
|
M68
|
|
71.1
|
100.0
|
9.5
|
1
|
28.19
|
|
NL72
|
M72
|
|
75.1
|
105.0
|
9.5
|
1
|
30.70
|
|
NL76
|
M76
|
3"
|
79.1
|
110.0
|
9.5
|
1
|
33.31
|
|
NL80
|
M80
|
3 1/8"
|
83.1
|
115.0
|
9.5
|
1
|
36.02
|
|
NL85
|
M85
|
|
88.1
|
120.0
|
9.5
|
1
|
37.84
|
|
NL90
|
M90
|
|
92.4
|
130.0
|
9.5
|
1
|
47.70
|
|
NL95
|
M95
|
|
97.4
|
135.0
|
9.5
|
1
|
49.80
|
|
NL100
|
M100
|
4"
|
103.4
|
145.0
|
9.5
|
1
|
58.90
|
|
NL105
|
M105
|
|
108.4
|
150.0
|
9.5
|
1
|
61.30
|
|
NL110
|
M110
|
|
113.4
|
155.0
|
9.5
|
1
|
63.60
|
|
NL115
|
M115
|
|
118.4
|
165.0
|
9.5
|
1
|
75.30
|
|
NL120
|
M120
|
|
123.4
|
170.0
|
9.5
|
1
|
77.90
|
|
NL125
|
M125
|
|
128.4
|
173.0
|
9.5
|
1
|
76.60
|
|
NL130
|
M130
|
5"
|
133.4
|
178.0
|
9.5
|
1
|
79.20
|
