Home / Standards / GB/T 3098.21 GB/T 3098.21 Active Mechanical properties of fasteners—Stainless steel tapping screws 紧固件机械性能 不锈钢自攻螺钉 Standard Type GBT ICS 21.060.10 CCS J13 Status 现行 Issue Date 2014-06-24 Implementation 2015-03-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会