Material sintered tungsten, mil-t-21014, ty ii; o/a dim 0.156 in. Dia, 0.125 in. Dp; 1 hole 0.086 in. Diameter unc-3b through end; slotted one end 0.031 in. W by 0.031 in. Dp across diameter 0.156 in.; other end chamfered 45.0 degrees to a diameter of 0.094 in.