Home / Standards / GB/T 8125-1987 GB/T 8125-1987 Abolished Type and size of gauges for metric trapezoidal screw threads 梯形螺纹量规 型式和尺寸 Standard Type GBT ICS 17.020 CCS J42 Status 废止 Issue Date 1987-08-10 Implementation 1988-07-01 Responsible Dept N/A Drafting Unit N/A