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Large plain washers for self-tapping screws

Q 422

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汽标代号Q 422 Q422 422Q Large plain washers for self-tapping screws
Screw Thread
d
ST2.9 ST3.5 ST4.2 ST4.8 ST5.5 ST6.3 ST8
d max
min
dc max=nominal size
min
h Nominal Size
max
min
2.56 3.12 3.67 4.12 4.82 5.52 7.27
2.46 3 3.55 4 4.7 5.4 7.15
9 11 12 15 15 18 21
8.64 10.57 11.57 14.57 14.57 17.57 20.48
1 1 1 1.6 1.6 1.6 2
1.1 1.1 1.1 1.8 1.8 1.8 2.2
0.9 0.9 0.9 1.4 1.4 1.4 1.8

Alternative history

Similar Standards

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