QC/T 866-2011
6-Lobe 90° oval head screws
Q 258-2012
6-Lobe 90° flat head screws
QC/T 856-2011
6-Lobe 90° flat head screws
Q 260-2012
6-Lobe cheese head thread rolling screws
Q 261-2012
Hexagon head thread forming screws
Q 262-2012
Cross recessed pan head thread forming screws
Q 263-2012
Cross recessed countersunk head thread forming screws
Q 264-2012
Cross recessed raised countersunk head thread forming screws
Q 270-2012
Type H hexagon flange head tapping screws-type A-type C
Q 270-2012
Type H hexagon flange head tapping screws-type A-type F
Q 273-2012
Type H cross recessed round head tapping screws-type A-type F
Q 273-2012
Type H cross recessed round head tapping screws-type A-type C
Q 274-2012
Type H cross recessed countersunk head tapping screws-type A-type C
Q 278-2012
Type H cross recessed countersunk head tapping screws-type A-type F
Q 275-2012
Type H cross recessed hexagon head tapping screws with indentation-type A-type F
Q 275-2012
Type H cross recessed hexagon head tapping screws with indentation-type A-type C
Q 276-2012
Type H cross recessed raised countersunk head tapping screws-type A-type C
Q 277-2012
Type H cross recessed raised countersunk head tapping screws-type A-type F
Q 279-2012
Hexagon washer head tapping screws—Type C
Q 279-2012
Hexagon washer head tapping screws—Type F
