Philip C. Hargraves, 52, an official of the General Electric Co. who was active in civic organizations in Sumner, died Tuesday at Suburban Hospital in Bethesda following a heart attack. He was stricken while driving his car in Bethesda.

Mr. Hargraves was born in Boston, Mass. He served in the U.S. Marine Corps in 1946 and 1947 and studied mechanical, structural and architectural design at the Feener and Franklin technical schools and at the Boston Architectural Centre. He was recalled to active duty in the Marine Corps during the Korean conflict.

He joined GE at its Lynn, Mass., plant about 1950 as a draftsman. He was transferred to the company's Washington offices in 1952.

Mr. Hargraves attended night classes at George Washington University while working for GE and earned a bachelor's degree in engineering and administration in 1965. At the time of his death, he was a representative for technology and advanced applications programs for GE's aerospace group in Washington.

He also was president of the board of directors of the Sumner Village Condominium Corp. and a member of the Sumner Village Community Association board.

He was a former coach of the St. John's Episcopal Church team in the YWCA basketball league, a Cub Scout commissioner and a member of the Izaak Walton League and the Bethesda Country Club. His professional affiliations included membership in the American Defense Preparedness Association and the American Institute of Astronautics and Aerospace.

He is survived by his wife, Shirley Anne, of Sumner; a daughter, Cynthia Anne Tapman of Blue Hill, Maine; a son, Richard Thomas, of Durango, Colo., and six grandchildren.