Home / Standards / GB/T 801-1998 GB/T 801-1998 Abolished Cup head square neck bolts with small head andshort neck--Product grade B 小半圆头低方颈螺栓 B级 Standard Type GBT ICS 21.060.10 CCS J13 Status 废止 Issue Date 1998-08-28 Implementation 1999-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会