1.580" hole diameter 2.370" outside diameter 0.130" material thickness i/d rounded at 0.250 in. nom radius, two 0.290 in. dia holes on face equally spaced on 1.980 in. bolt circle dia anodize surface treated convex
0.500" hole diameter 1.245" outside diameter 0.073" material thickness id chamfer 0.030 in. min, 0.040 in. max by 45 deg flat sideof washer cadmium surface treated convex