STUDBOLT, 1/2 IN DIA X 80MM LONG, FULLY THREADED, C/W 2 HEAVY HEXAGON NUTS, MATL STUDBOLTS ASTM A193 GRADE B7M: NUTS ASTM A194 GRADE 2HM, BOTH ITEMS TO BE ZINC PLATED/BICHROMATE TREATED, UNC THREADS TO ANSI B1.1 & TOLERANCES TO B1.1 CL 2A FOR STUDBOLTS & ANSI B18.2.2 CL 2B FOR NUTS Quantity 60 Sets