Home / Standards / GB/T 889.1-2015 GB/T 889.1-2015 Active Prevailing torque type hexagon nuts (with non-metallic insert)，style 1 1型非金属嵌件六角锁紧螺母 Standard Type GBT ICS 21.060.20 CCS J13 Status 现行 Issue Date 2015-12-31 Implementation 2016-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A