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Chinese Standard: GB/T 5785-2016

Hexagon head bolts—Fine pitch thread

MOD  ISO 8765:2011

全国紧固件标准化技术委员会(SAC/TC 85)

本标准规定了细牙六角头螺栓的型式尺寸、技术条件和标记。

本标准适用于螺纹公称直径d=8 mm~64 mm、细牙螺纹、性能等级为5.6、8.8、10.9、A270、A470、A250、A450、CU2、CU3和AL4级、产品等级为A级和B级的六角头螺栓。A级用于d=8 mm~24 mm和l≤10d或l≤150 mm(按较小值);B级用于d>24 mm或l>10d或l>150 mm(按较小值)的螺栓。

应优先选用GB/T 5782规定的粗牙螺栓。

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