导读:(常用的是德标和美标) GB (国标)ISO(国际标准) DIN (德制) JIS (日标) ANSI /ASME (American National Standards Institute – ANSI;American Society Of Mechanical Engineers – ASME)(美标) BS (英制) IFI =Industrial Fastener Instit
(常用的是德标和美标) GB (国标)ISO(国际标准) DIN (德制) JIS (日标) ANSI /ASME (American National Standards Institute – ANSI;American Society Of Mechanical Engineers – ASME)(美标) BS (英制) IFI =Industrial Fastener Institute是美国工业紧固件协会的标准 BA (英制)