Home / Standards / GB/T 6172.2 GB/T 6172.2 Active Prevailing torque type hexagon thin nuts(with non-metallic insert) 非金属嵌件六角锁紧薄螺母 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