Exhaust pipe attachment bolt, nut and washer assembly, for Norton singles 1937 to 1945? Fitted on the rear on military side valves from 1937 to 1945. 7/16 inch x 20tpi approx 5-1/4 inch long. Picture shows only the stud / bolt. Original part number: 3756 - exhaust pipe attachment bolt (front) 7/16in x 20ths
