Home / Standards / HB 8344-2015(2017) HB 8344-2015(2017) Active GH4169螺纹公差带4H6HMJ螺纹小六角头螺钉 Standard Type HB83 ICS N/A CCS N/A Status Active Issue Date 2015-10-10 Implementation 2016-03-01 Centralized Committee 工业和信息化部 Issuing Authority 工业和信息化部