Fasteners—Bolts,screws,studs and nuts—Symbols and descriptions of dimensions
MOD ISO 225:2010
全国紧固件标准化技术委员会(SAC/TC 85)
本标准规定了螺栓、螺钉、螺柱及螺母标注尺寸采用的代号、内容及标注方法。
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