Q 120-1999
Double end studs
Q 128-1999
Double end studs(clamping type)
Q 121-1999
Double end studs b1=1.25d
Q 121B-1999
Double end studs b1=1.25d
Q 123B-1999
Double end studs b1=1.25d
Q 123-1999
Double end studs b1=1.25d
Q 124-1999
Double end studs b1=1.25d
Q 125-1999
Double end studs b1=1.25d
Q 129-1999
Double end studs b1=2d
Q 129B-1999
Double end studs b1=2d
Q 120-2012
Double end studs
Q 121-2012
Double end studs b1=1.25d
Q 121B-2012
Double end studs b1=1.25d
QC/T 870-2011
Double end studs b1=1.25d
QC/T 870-2011
Double end studs b1=1.25d
Q 123-2012
Double end studs b1=1.25d
Q 123B-2012
Double end studs b1=1.25d
QC/T 870-2011
Double end studs b1=1.25d
QC/T 870-2011
Double end studs b1=1.25d
Q 124-2012
Double end studs b1=1.25d