Home / Standards / GB/T 5104-1985 GB/T 5104-1985 Abolished The basic types and dimensions of hobs for 30°pressure angle involute splines 30°压力角渐开线花键滚刀基本型式和尺寸 Standard Type GBT ICS 25.100.25 CCS J41 Status 废止 Issue Date 1985-04-27 Implementation 1986-03-01 Responsible Dept N/A Drafting Unit N/A