Steven P. Nagel, 60, the founder, chairman and president of Vantage International Corp., an international management company that specializes in aerospace and defense matters, died Dec. 28 at George Washington University Hospital after a stroke.

Mr. Nagel, a resident of Washington, was a decorated veteran of World War II who spent most of his working life in the field of defense equipment and technology. He worked briefly for the Commerce Department when he moved here in 1950 and then joined the Edo Corp., where he organized an international program for antisubmarine warfare, oceanography and long-range navigation.

In 1957, he founded Aeromaritime Inc., which became a principal independent exporter of military products. He ran that company and its subsidiaries until 1973, when he resigned to organize Vantage International.

Over the years Mr. Nagel contributed articles on military and international affairs to The Washington Post and Look magazine.

Mr. Nagel was born in Hungary. He came to the United States in 1939 and settled in San Francisco. He graduated from the University of California at Berkeley, where he also earned a master's degree in political science. During World War II, he served in the Army in Europe. He won the Silver Star medal for gallantry and three Purple Heart medals.

His marriages to the former Jean Frances Baker and the former Joanne Renee Kortum ended in divorce.

Survivors include his wife, Rebecca Spaatz Nagel of Washington; three daughters by his first marriage, Deborah Anne Nagel Beard of Great Falls, Va., Victoria Paula Holden of Bethesda and Olivia Angela Nagel of New York City; three stepchildren, Edith Gresham Laver of Bethlehem, Pa., Katharine Burdell Gresham of Washington and Rebecca Wayne Gresham of McLean, and one grandchild.