Norton axle spindle nut, domed, stainless, 20tpi. Suit Norton rigids front & back axle to 1946; rigids, plunger and swing arm rear axle 1947 to 1968+. NOTE: Norton used the same part number post 1946 BUT changed the shape of the nut. This nut is domed ie a blind nut. Original Part Numbers: 9509; A2/454; 067739 - wheel spindle nut