Home / Standards / GB/T 802.4-2009 GB/T 802.4-2009 Active Hexagon cap nuts - Welding type 六角低球面盖形螺母 焊接型 Standard Type GBT ICS 21.060.10 CCS J13 Status 现行 Issue Date 2009-10-15 Implementation 2010-03-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A