Mounting Bracket. Fits M939 M818 M931 5-Ton Truck. NSN 5340-01-083-1121. P/N 12256012-1. SPECS: Material steel, carbon; 0.1196 in. thick, 16.020 in. lg, 5.720 in. W. at one end and 1.900 in. W. at opposite end; with A 9.000 in. L1.120 in. W. flat piece of steel, carbon attached to edge, with two elongated holes 0.406 in. L, 0.620 in.W, 4.70 in. from edge and 3.300 in. apart; the holes are on A 8 degree angle This is a great buy Save $$$$$$$ here L4A4 10324