Home / Standards / GB/T 1442-1985 GB/T 1442-1985 Abolished Driving tenons and sockets for parallel shank tools-- Dimensions and tolerances 直柄工具用传动扁尾及套筒的尺寸和公差 Standard Type GBT ICS 25.140.30 CCS J41 Status 废止 Issue Date 1978-10-20 Implementation 1986-03-01 Responsible Dept N/A Drafting Unit N/A