自攻螺丝M425是什么字母数字是意思?自攻螺丝还
栏目:自攻螺丝 发布时间:2019-09-26 12:10
也可直接点“搜索资料”搜索整个问题   展开全部1. 自攻螺丝M4×25表达的意思是标准的普通圆螺纹,直径为4mm的粗牙外螺纹,pk10牛牛注册平台螺距为1mm,pk10牛牛注册平台pk10牛牛注册平台pk10牛牛注册平台长度为25mm。pk10牛牛注册平台参照国标:GB/T 6561-1986《十字槽沉头自攻锁紧螺钉》,本标准规定了螺纹规格为M2.5~M6的十字槽沉头自攻锁紧螺钉   GB/T 5280-2002《自攻螺钉用螺纹》规定的螺纹规格为ST 1.5~ST 9.5的自攻螺钉(金属薄板用螺钉)   GB/T 5285-1985《六角头自攻螺钉》本标准规定了螺纹规格为ST 2.2~ST 9.5的六角头自攻螺钉

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