Ken Kaufman, Bob Zaccareo and Bob Curtis won divisional titles at the eighth Insilco National BCD squash championships yesterday at the Capitol Hill Squash Club.

Kaufman, of Westchester, N.Y., swept Rick Bradt of New York City, 15-8, 15-12, 15-11, for the B title. In an earlier semifinal, Kaufman eliminated Nelson Graves, the Washington Regional champion, 15-0, 15-7, 15-8.

Graves, a resident of the District, defeated Ed Flory of Philadelphia in five sets to finish third.

"It got off on a very fast start," Graves said. "I wasn't mentally into the fourth one (which he lost, 15-1), so I decided to save it for the fifth."

Curtis, of St. Louis, defeated Bill Gottlieb of Lansing, Mich., 15-10, 12-15, 17-15, 15-13, for the C title. Zaccereo, of Montclair, N.J., defeated Doug Sheperdigian of Chicago, 13-15, 15-8, 15-9, 16-18, 15-11, in the C final.

The tournament, which began Saturday, matched 48 divisional champions from 16 national regions. These 48 were all that remained from an opening field of 7,300, making this the world's largest amateur squash tournament.

Stacy Parks-Victory of Los Angeles, the only woman in the field of 48, was eliminated in the B consolation semifinals.