Home / Standards / GB/T 6189-1986 GB/T 6189-1986 Active Hexagon lobular for fasteners--Type E 紧固件用六角花形 E型 Standard Type GBT ICS 21.060 CCS J13 Status 现行 Issue Date 1986-01-17 Implementation 1986-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A