This listing is for the special shouldered sprocket nut that was fitted to Lucas Mag/Dyno units - on all roadgoing Norton single cylinder models (but also many other makes of British motorcycles using a Lucas Mag/dyno unit, original part number 24-0195. This nut is plated steel.
This nut is shouldered because the mag/dyno sprocket (which we also sell - Item 0392) is recessed, see accompanyning photograph of this nut fitted to an original 1936 Lucas Mag/Dyno unit on one of my SOHC International engines - but should also fit OHV and SV engines fitted with MagDyno's.
Price is Each
Note - unlike the engine side magneto sprocket nuts (Items 1186 and 1187), which we manufacture ourselves - these sprocket nuts are bought in from one of our magneto part suppliers - as they are generic for all Lucas MagDyno's. Therefore - unlike most of our own fastenings, these are cadmium plated steel, rather than stainless steel. They look nice quality though and are a good fit on the magnetos I tried against. As these are a generic fitting though - I would recommend double checking against your own bike that the shouldered nut does not fould the outer timing case in anyway - as there were lots of timing cover variations over the years.