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BS 4395-1-2004
High strength friction grip flat washer for structural engineering metric series
Nom
d max
d min
dc max
dc min
h max
h min
Φ12
13.8
13.4
30
29
2.8
2.4
Φ16
17.8
17.4
37
36
3.4
3
Φ20
21.5
21.1
44
43
3.7
3.3
Φ22
23.4
23
50
48.5
4.2
3.8
Φ24
26.4
26
56
54.5
4.2
3.8
Φ27
29.4
29
60
58.5
4.2
3.8
Φ30
32.8
32.4
66
64.5
4.2
3.8
Φ36
38.8
38.4
85
83.5
4.6
4.2
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