Chinese Standard: GB/T 70.3-2008

Hexagon socket countersunk head screws

MOD  ISO 10642:2004

全国紧固件标准化技术委员会(SAC/TC 85)

本部分规定了螺纹规格为M3～M20、性能等级为8.8、10.9和12.9级、产品等级为A级的内六角沉头螺钉。

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