Stud Bolt with Nuts & Washers, ASME B18.2.1, A193 B8, A194 8
Metric Hexagon Nuts, ASTM A194 Grade 8, 8A, 8M, 8MA, M8-M48
ASME B18.2.2 Heavy Hex Nut, ASTM A194 2H, 2HM, 7, 7M, 4, 8, 8M