Normas ISO

Countersunk raised head screws (common head style) with type H or type Z cross recess -- Product grade A

Cross-recessed countersunk flat head screws (common head style) -- Grade A-- Part 2: Steel of property class 8.8, stainless steel and non-ferrous metals

Countersunk flat head screws (common head style) with type H or type Z cross recess -- Product grade A-- Part 1: Steel of property class 4.8

Pan head screws with type H or type Z cross recess -- Product grade A

Prevailing torque type all-metal hexagon nuts, style 2 -- Property classes 5, 8, 10 and 12

Prevailing torque type hexagon nuts (with non-metallic insert), style 1 -- Property classes 5, 8 and 10