THOMAS REGENHARDT, 43, of DeFuniak Springs and formerly of St. Petersburg, died Friday (July 2, 1993) at West Center Hospital, Pensacola. He came here in 1953 from his native Niagara Falls, N. Y. He was a graduate of Northeast High School and he attended St. Petersburg Junior College. He was a custom cabinetmaker at Stanley Cabinets, St. Petersburg. Survivors include his mother, Margaret Regenhardt, Bushnell, three brothers, William and Carl Jr., both of St. Petersburg, and Paul, Aurora, Colo; and a sister, Susan Stees, Dunnellon.