Home / Standards / GB/T 70.6-2020 GB/T 70.6-2020 Active Hexagon socket head cap screws－Fine pitch thread 内六角圆柱头螺钉 细牙螺纹 Standard Type GBT ICS 21.060.10 CCS J13 Status 现行 Issue Date 2020-03-06 Implementation 2020-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会