A teen-ager who hit a bench with his golf club in a fit of frustration was killed on Saturday when the club's shaft broke, bounced back and pierced his heart, authorities said today.

The youth, Jeremy T. Brenno, 16, of Gloversville, was playing golf with some friends at the Kingsboro Golf Club about 3:30 P.M. Saturday when he struck the bench with his No. 3 wood after missing a shot, Fulton County Sheriff's deputies said.

Jeremy was playing the sixth hole of the course at the time of the accident. Gloversville is about 40 miles northwest of Albany.

Several doctors who were at the golf club administered emergency medical treatment to Jeremy before he was taken to Nathan Littauer Hospital. Additional attempts to save him there failed, and he was pronounced dead just before 6 P.M., deputies said.