Lawton E. Inabinet, 63, the president of Interstate Federal Savings and Loan Association, died at Arlington Hospital Monday following a heart attack.

Mr. Inabinet began his business career in 1932 with Weaver Bros Inc., an mortgage firm. In 1936, he moved to the Interstate Building Association, now Interstate Federal Savings and Loan.

He was elected to its board of directors in 1942 and elected executive vice president and managing officer in 1957. He was named president in 1969.

Mr Inabinet was born in Norfolk, Va. His family moved to Washington when he was about five and he later graduated from Western High School. He earned a law degree from Columbus University and was admitted to the D.C. Bar in 1937. He was a lieutenant in the Navy during World War II and served in the Pacific.

He was a past president of the Metropolitan Washington Savings and Loan League and a past director of the U.S. Savings and Loan League. He was a member of the Washington Real Estate Board, the Metropolitan Washington Board of Trade, the Society of Residential Appraisers and the Federal City Council.

He was a past president of the Washington Golf and Country Club in Arlington and a past master of Kemper Masonic Lodge No. 64 in Falls Church.

Mr. Inabinet's survivors include his wife, the former Lois Fry, of the home in Arlington; two children, Alan L., of Fairfax, and Carol I. Clark, of Arlington; his mother, Margaret M. Inabinet, also of Arlington, and seven grandchildren.