Home / Standards / GB/T 97.5-2002 GB/T 97.5-2002 Active Plain washers for tapping sew and washer assemblies 平垫圈 用于自攻螺钉和垫圈组合件 Standard Type GBT ICS 21.060.30 CCS J13 Status 现行 Issue Date 2002-12-05 Implementation 2003-06-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A