
Tolerances for fasteners. Specification for tolerances of plain washers for bolts , screws and nuts with nominal thread diameters from 1 mm up to and including 150 mm. Product grades A and C
出版:British Standards Institution

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Tolerances for fasteners. Specification for tolerances of plain washers for bolts , screws and nuts with nominal thread diameters from 1 mm up to and including 150 mm. Product grades A and C
出版:British Standards Institution
专家解读视频