Q 615-1999
Slotted columnar fine thread plugs
Q 616-1999
Slotted plunger plugs
Q 619-1999
Inner hexagon conical screw plugs
QC/T 377-1999
Slotted cylinder plug
QC/T 378-2013
Inner hexagon conical screw plug
QC/T 386-1999
Magnetic core
QC/T 884-2011
Hexagon socket pipe magnetic plugs
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 150B-1999
Hexagon head bolts
Q 151B-1999
Hexagon head bolts with fine pitch thread
Q 151C-1999
Hexagon head bolts with fine pitch thread
Q 170B-1999
Hexagon bolts with wire holes on head
Q 171B-1999
Hexagon bolts with wire holes on head-fine pitch thread