9brass bar per qq-b-626 comp 22; 1.620 in. Square, 1.108 in. Lg; 0.405 1n. Min 0.412 in. Max inside diameter with 318-18 anpt thds thru; 0.535 in. Min 0.540 in. Outside dia; four plain mtg holes 0.195 in. Min 0.201 in. Max on 1.125 in. Mtg center to center