"GENERAL CHARACTERISTICS ITEM DESCRIPTION:QQ-A-355 TEMPER 351; LATERAL BEAM TYPE STOP MAIN LANDING GEAR; 2 MTG HOLES 0.322 P 0.007 IN. DIA, 1.213 IN. APART; BOTH HOLES COUNTERSUNK 100 DEG BY 0.656 IN. DIA; ALL CORNERS CHAMFERED 45 DEG BY 0.300 IN. DIA"