Chinese Standard: GB/T 802.3-2009

Acorn hexagon nuts with flange—Welding type

全国紧固件标准化技术委员会

GB/T 802的本部分规定了螺纹规格为M4～M24、性能等级为6、8、A250、A270、A450和A470级、产品等级为A级和B级的焊接型六角法兰面盖形螺母。A级用于D≤16mm；B级用于D＞16mm的螺母。

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