Walter Anthony Laukaitis, 63, an industrial specialist with the Navy Department's avionics production division since 1979, who was a former defense industry executive, died Dec. 2 in his home in Washington. He had a heart ailment.

Between the mid-1940s and 1950, Mr. Laukaitis worked for the War Assets Administration, where he rose to branch chief. During the 1950s, he worked for the Navy Department and as a customer relations executive with the Summers Gyroscope Co. in Washington.

During the early 1960s, he was a product and industry representative for organizations in the defense industry. From 1965 to 1969, he was head of his own firm, W.A. Laukaitis & Associates, a marketing organization representing electronics and defense companies.

Mr. Laukaitis was a native of Pennsylvania and came to Washington in 1938. He was a 1942 graduate of Catholic University and a member of its 1939 football team that played Arizona State to a scoreless tie in the Sun Bowl.

He was a member of St. Michael's Catholic Church in Silver Spring. He belonged of the Kenwood Golf and Country Club.

His wife of 27 years, the former Helena M. Pipa, died in 1971. Mr. Laukaitis's survivors include a son, Luke, of Washington; a daughter, Andrea L. Wendell of Atlanta, and one grandchild.