Home / Standards / GB/T 2673.1-2018 GB/T 2673.1-2018 Abolished Hexalobular socket countersunk flat head screws 内六角花形沉头螺钉 Standard Type GBT ICS 21.060.10 CCS J13 Status 废止 Issue Date 2018-12-28 Implementation 2019-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A