-n°30 Nut M30 UNI5588 ASTM A193 2H HDG ASTM A153 -n°30 Screw M30x110 UNI5739 A193 B7 HDG ASTM A153 -n°48 Nut M24 UNI5588 ASTM A193 2H HDG ASTM A153 -n°48 Screw M24x110 UNI5739 A193 B7 HDG ASTM A153