Home / Standards / GB/T 16824.2 GB/T 16824.2 Active Hexagon flange head tapping screws 六角法兰面自攻螺钉 Standard Type GBT ICS 21.060.10 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