Stud bolts with nuts and screws with washer for the oil&gas sector: 1. STUD BOLTS M16 DIA X 110MM LONG, FULLY THREADED C/W 2 HEAVY HEXAGON NUTS MATERIAL STUDBOLTS: ASTM A193 GRADE B7: MATERIAL NUTS: ASTM A194 GRADE 2H BOTH ITEMS ZINC PLATED/BICHROMATE THREATED, ISO METRIC COARSE THREADS QTY: 400 pieces 2. SCREWS M16 X 70MM STAINLESS STEEL WITH WASHER QTY: 100 pieces