Home / Standards / GB/T 6173 GB/T 6173 Active Hexagon thin nuts—Fine pitch thread 六角薄螺母 细牙 Standard Type GBT ICS 21.060.10 CCS J13 Status 现行 Issue Date 2015-12-31 Implementation 2016-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会