The commercial certificated pilot was landing the airplane on a paved runway that was 6,398 feet long by 150 feet wide. The pilot said that during the landing roll, as he applied the airplane's brakes, the airplane suddenly veered to the left, and the right wingtip struck the runway surface. The airplane departed off the left edge of the runway. The airplane received damage to the right wingtip that entailed replacement of the wingtip, nose rib, and the leading edge of the wing between wing stations 190 and 208. No mechanical malfunction of the airplane was found.