Chinese Standard: GB/T 31.1-2013

Hexagon bolts with split pin hole on shank

全国紧固件标准化技术委员会(SAC/TC 85)

本标准规定了螺纹规格为M6～M48、产品等级为A级和B级的六角头螺杆带孔螺栓。
本标准规定的螺栓是在GB/T 5782产品的杆部制出开口销孔。

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