Brass, leaded rod, 1/2 hard, qq-b-626; silver plate, type 2, grade b, qqs-365; 0.880 in. Od; 0.790-0.810 in.Lg; id 0.630-0.650 in. By 0.580 in depth 0.750-16 unf-2b thded 0.330 in. Dp; 0.312-32 unef-2b thd by 0.220 in. Dp top of id; outside surface 96 dp diamond knurl