Home / Standards / GB/T 3104-1982 GB/T 3104-1982 Active Fasteners--Widths across flats of hexagon products 紧固件 六角产品的对边宽度 Standard Type GBT ICS 21.060 CCS J13 Status 现行 Issue Date 1982-05-22 Implementation 1983-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A