Home / Standards / GB/T 6177.2 GB/T 6177.2 Active Hexagon nuts with flange,style 2—Fine pitch thread 2型六角法兰面螺母 细牙 Standard Type GBT ICS 21.060.20 CCS J13 Status 现行 Issue Date 2016-02-24 Implementation 2016-06-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会