Lambretta Stainless Rear Hub Nut. Original shape and the best quality, a superb fit on the layshaft and tight on the locking ring washer.
These now come extra deep with a nylon insert for extra safety.
Many cheaper nuts have such a big chamfer on the bottom the lock ring can turn, these do not have that problem.
Rear hub wavy washer (sits under the nut) available here http://www.lambrettaupgrades.co.uk/apps/ webstore/products/show/5530089
Product code: LUMBFDN16
Price includes VAT @ 20%