Home / Standards / GB/T 3098.21-2008 GB/T 3098.21-2008 Abolished Mechanical properties of fasteners - Part 21:Tapping screws of stainless-steel 紧固件机械性能 第21部分：不锈钢自攻螺钉 Standard Type GBT ICS 21.060.10 CCS J13 Status 废止 Issue Date 2008-08-25 Implementation 2009-02-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会