Stud bolts ASTM A194 GR. 2H ASME B18.2.2 Length: 425mm Thread class symbol: ANSI B1.1 CLASS 2A Type of thread: UNC (8 TPI) Coating: fluorocarbon With 2 heavy hexagon nuts ASTM A193 GR. B7 BS 4882 Size: 2“ Thread class symbol: ANSI B1.1 CLASS 2B 300 pcs. Certificate: ISO 10474-3.1B No China origin