Home / Standards / GB/T 74-1985 GB/T 74-1985 Abolished Slotted set screws with cup point 开槽凹端紧定螺钉 Standard Type GBT ICS 21.060.10 CCS J13 Status 废止 Issue Date 1985-08-01 Implementation 1986-06-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A