"SECURING HOLES FIRST END 0.440 IN. FROM END TO CENTER, SECOND END 0.750 IN. FROM END TO CENTER HOLE, POSITIONED 120 DEGREES APART THREE EACH END, USED IN REMOTE OPERATING GEAR FOR TRIM AND DRAIN VALVE TD-103 ASSEMBLY; COUNTERBORE DIAMETER: BOTH ENDS, 1.813 IN. NOMINAL; COUNTERBORE DEPTH: FIRST END, 1.250 IN. NOMINAL; SECOND END, 1.500 IN. NOMINAL"