Used on hardware;sub engineering and diesel sys. ring, packing (0.156 pitch, 8 tooth) g (4) segments in each assy; 12 holes on side, eq sp 5/8 in dia, c-bore 0.740 in; (8) holes on surface, 5/8 in dia, c-bore 3/4 in deep, centered to center 30 deg apart; 10 in dia; (a) dia 7.811 in, (b) dia 8.001 in