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Metric, Flat Washers Specification DIN 125 Design Table

ISO Metric Hardware Specification Design Data

Metric, Flat Washers, per. Specification DIN 125, Part 2, Type A

This table define the dimensional limits of metric washers sizes M1.6 to M28 which are medium type, primarily for hexagon bolts. This standard has been withdrawn and replaced by the following:

DIN EN ISO 7089, DIN EN ISO 7090, ISO 7089, ISO 7090

DIN 125,

Thread Size
d1
d2
h
d3
Clearance Hole Diameter
Outside Diameter
Thickness
Min.
Max.
Max.
Min.
Max.
Min.
Max.
Min.
M1.6
1.7
1.84
4
3.7
0.35
0.25
2
1.8
M1.7
1.8
1.94
4.5
4.2
0.35
0.25
2.1
1.9
M2
2.2
2.34
5
4.7
0.35
0.25
2.6
2.4
M2.3
2.5
2.64
6
5.7
0.55
0.45
2.9
2.7
M2.5
2.7
2.84
6
5.7
0.55
0.45
3.1
2.9
M2.6
2.8
2.94
7
6.64
0.55
0.45
3.2
3
M3
3.2
3.38
7
6.64
0.55
0.45
3.6
3.4
M3.5
3.7
3.88
8
7.64
0.55
0.45
4.1
3.9
M4
4.3
4.48
9
8.64
0.9
0.7
4.7
4.5
M5
5.3
5.48
10
9.64
1.1
0.9
5.7
5.5
M6
6.4
6.62
12
11.57
1.8
1.4
6.8
6.6
M7
7.4
7.62
14
13.57
1.8
1.4
7.8
7.6
M8
8.4
8.62
16
15.57
1.8
1.4
9.2
9
M10
10.5
10.77
20
19.48
2.2
1.8
11.2
11
M12
13
13.27
24
23.48
2.7
2.3
13.7
13.5
M14
15
15.27
28
27.48
2.7
2.3
15.7
15.5
M16
17
17.27
30
29.48
3.3
2.7
17.7
17.5
M18
19
19.33
34
33.38
3.3
2.7
20.2
20
M20
21
21.33
37
36.38
3.3
2.7
22.4
22
M22
23
23.33
39
38.38
3.3
2.7
24.4
24
M24
25
25.33
44
43.38
4.3
3.7
26.4
26
M26
27
27.33
50
49.38
4.3
3.7
28.4
28
M27
28
28.33
50
49.38
4.3
3.7
30.4
30
M28
29
29.33
50
49.38
4.3
3.7
31.4
31

Related resources:

This table define the dimensional limits of metric washers sizes M30 to M160

d3
Thread Size
d1
d2
h
  
Clearance Hole Diameter
Outside Diameter
Thickness
Min.
Max.
Max.
Min.
Max.
Min.
Max.
Min.
M30
31
31.39
56
55.26
4.3
3.7
33.4
33
M32
33
33.62
60
58.8
5.6
4.4
35.4
35
M33
34
34.62
60
58.8
5.6
4.4
36.4
36
M35
36
36.62
66
64.8
5.6
4.4
38.4
38
M36
37
37.62
66
64.8
5.6
4.4
39.4
39
M38
39
39.62
72
70.8
6.6
5.4
41.4
41
M39
40
40.62
72
70.8
6.6
5.4
42.4
42
M40
41
41.62
72
70.8
6.6
5.4
43.6
43
M42
43
43.62
78
76.8
8
6
45.6
45
M45
46
46.62
85
83.6
8
6
48.6
48
M48
50
50.62
92
90.6
9
7
52.6
52
M50
52
52.74
92
90.6
9
7
54.6
54
M52
54
54.74
98
96.6
9
7
56.6
56
M55
57
57.74
105
103.6
10
8
60
59
M56
58
58.74
105
103.6
10
8
63
62
M58
60
60.74
110
108.6
10
8
65
64
M60
62
62.74
110
108.6
10
8
67
66
M64
66
66.74
115
113.6
10
8
71
70
M68
70
70.74
120
118.6
11
9
75
74
M72
74
74.74
125
123.4
11
9
79
78
M76
78
78.74
135
133.4
11
9
83
82
M80
82
82.87
140
138.4
13.2
10.8
87
86
M85
87
87.87
145
143.4
13.2
10.8
92
91
M90
93
93.87
160
158.4
13.2
10.8
97
96
M95
98
98.87
165
163.4
13.2
10.8
102
101
M100
104
104.87
175
173.4
15.2
12.8
108
107
M105
109
109.87
180
178.4
15.2
12.8
113
112
M110
114
114.87
185
183.15
15.2
12.8
118
117
M115
119
119.87
200
188.15
15.2
12.8
123
122
M120
124
125
210
208.15
17.2
14.8
128
127
M125
129
130
220
218.15
17.2
14.8
133
132
M130
134
135
220
218.15
17.2
14.8
138
137
M135
139
140
230
228.15
17.2
14.8
143
142
M140
144
145
240
238.15
19.2
16.8
148
147
M145
149
150
250
248.15
19.2
16.8
153
152
M150
155
156
250
248.15
19.2
16.8
159
158
M160
165
166
250
248.15
19.2
16.8
169
168

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