Home / Standards / GBT 6187.2-2016 GBT 6187.2-2016 Type 2 All-Metal Hexagon Flange Locknuts — Fine Pitch Thread 2型全金属六角法兰面锁紧螺母 细牙 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A