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CNS 4252-1978
Curved spring lock washers—Type A
Nom
d min
d max
dc max
H min
H max
b max
b min
h max
h min
r
Φ2
2.1
2.4
4.4
0.7
0.9
1
0.8
0.6
0.4
0.1
Φ2.3
2.4
2.7
4.9
0.9
1.1
1.1
0.9
0.7
0.5
0.1
Φ2.5
2.6
2.9
5.1
0.9
1.1
1.1
0.9
0.7
0.5
0.1
Φ2.6
2.7
3
5.2
0.9
1.1
1.1
0.9
0.7
0.5
0.1
Φ3
3.1
3.4
6.2
1.1
1.3
1.4
1.2
0.8
0.6
0.1
Φ3.5
3.6
3.9
6.7
1.1
1.3
1.4
1.2
0.8
0.6
0.1
Φ4
4.1
4.4
7.6
1.2
1.4
1.6
1.4
0.9
0.7
0.2
Φ5
5.1
5.4
9.2
1.5
1.7
1.9
1.7
1.1
0.9
0.2
Φ6
6.1
6.5
11.8
2
2.2
2.65
2.35
1.4
1.2
0.3
Φ7
7.1
7.5
12.8
2
2.2
2.65
2.35
1.4
1.2
0.3
Φ8
8.2
8.6
14.9
2.45
2.75
3.15
2.85
1.7
1.5
0.5
Φ10
10.2
10.7
18.1
2.85
3.15
3.7
3.3
1.9
1.7
0.5
Φ12
12.2
12.7
21.1
3.35
3.65
4.2
3.8
2.25
1.95
1
Φ14
14.2
14.7
24.1
3.9
4.3
4.7
4.3
2.55
2.25
1
Φ16
16.2
17
27.4
4.5
5.1
5.2
4.8
2.95
2.65
1
Φ18
18.2
19
29.4
4.5
5.1
5.2
4.8
2.95
2.65
1
Φ20
20.2
21.2
33.6
5.1
5.9
6.2
5.8
3.4
3
1
Φ22
22.5
23.5
35.9
5.1
5.9
6.2
5.8
3.4
3
1
Φ24
24.5
25.5
40
6.5
7.5
7.25
6.75
4.2
3.8
1.6
Φ27
27.5
28.5
43
6.5
7.5
7.25
6.75
4.2
3.8
1.6
Φ30
30.5
31.7
48.2
9.5
10.5
8.25
7.75
6.2
5.8
1.6
Φ36
36.5
37.7
58.2
10.3
11.3
10.25
9.75
6.2
5.8
1.6
Φ42
42.5
43.7
68.2
12
13
12.25
11.75
7.25
6.75
2
Φ48
49
50.5
75
12
13
12.25
11.75
7.25
6.75
2
Φ56
57
58.5
87
14
15.5
14.25
13.75
8.25
7.75
2
Φ64
65
66.5
95
14
15.5
14.25
13.75
8.25
7.75
2
Φ72
73
74.5
103
14
15.5
14.25
13.75
8.25
7.75
2
Φ80
81
82.5
111
14
15.5
14.25
13.75
8.25
7.75
2
Φ90
91
92.5
121
14
15.5
14.25
13.75
8.25
7.75
2
Φ100
101
102.5
131
14
15.5
14.25
13.75
8.25
7.75
2
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