Home / Standards / HB 8338-2013(2017) HB 8338-2013(2017) Active TC4螺纹公差带6E头部2个保险丝孔MJ螺纹六角头螺钉 Standard Type HB83 ICS N/A CCS N/A Status Active Issue Date 2013-10-13 Implementation 2014-03-01 Centralized Committee 工业和信息化部 Issuing Authority 工业和信息化部