Norton gearbox top mounting bolt and nut, for upright gearbox. NOS as stored for 60 yrs. This bolt and nut also fits the early version but does not have the step (shoulder) machined into the nut. The bolt is 2-1/2 inch long (overall), fits an 11/16in hole and has one flat side on the bolt head. The nut is 1-5/16 inches long and is 1 inch across the flats. Original Norton part numbers: 9460; A2/310 - Gearbox suspension bolt and nut
