QC/T 854-2011
Hex flange bolt with double end
QC/T 854-2011
Hex flange bolt with double end
Q 130-2012
Hex flange bolt with double end,d=d1
Q 130-2012
Hex flange bolt with double end,d≠d1
MS 9304B-1986
Hexagon head bolt with double end
MS 9304B-1994
Hexagon head bolt with double end
MS 9304B-1999
Hexagon head bolt with double end