Square bolt ½”-M16 70 ( thread Length: 32MM) with heavy hex nut, design American national standard and unified standard square bolts, ANSI/ASME B 18.2.1-1996 material ASTM A 193 B7+ASTM A 194 GR.2H Galvanized per ASTM A 153, Thread Unified Thread per ASME B1.1, to be used for Deluge valve TAG:40-730-SQ-117C. P/N 14733 100 Each Stud Bolt DN 1.1/8” L=180 Material SA 193 GR.B7 Model Number 4389 A/B P/N 14587. MIAP CODE 458RLS00000 9 Each