Studbolt, ASTM A193-B7M, c/w 3 Heavy Duty Hex Nut, A194-2HM, PTFE/FCC, Xylan, 1070 Blue colour : 1) 2.1/2" - 4UNC x 590MM, 40sets 2) 3” - 4UNC x 710mm, 40sets 3) 4” - 4UNC x 810mm, 24sets European origin only