Originally Posted by
cny-bikeman
if that washer is separate or is attached and rotates freely, and also has serrations where it meets the frame you should be ok. If the washer is an integral part of the nut then I would add a serrated washer.
**Actually that dropout looks like it might be less than smooth. If badly damaged it may not hold well.
You can see from the picture itself that it is the standard 'track nut' with integrated washer. It is serrated on the inside.