Thomas M. Armour, a retired claims examiner for the Social Security Administration, died Friday after a heart attack while attending the races at Pimlico. He was 69 and lived on Forest Glen Road.

He is survived by his wife, the former Clara Wall; a son, Leon Armour of Fairfax, Va.; a daughter, Dr. Karen M. Armour of Baltimore; five sisters, Pearl Satterfield of Bowling Green, Ky., Doris Sampson of Milwaukee, and Ida Gamble, Vernia Martin and Judy Wilkes, all of Indianapolis; a brother, Morris Armour of Indianapolis; and a grandson.