Steel per mil-s-81591 composition1c-303, passivate per qq-p-35 type ii, 1.120 in. H, 1.000 lg, 1.070 in. Dp, 0.172 in. Diameter hole 2 places, 0.089 in.Hole 2 places, 0.278 in. Diameter hole 1 pl-ace centered on lg and 0.810 in cente-er hole to top edge