I think the number is F54A.
The Moto-lita website doesn't show this hub (they call it a "boss") number... So don't know what column/vehicle it fits...
I already have this Moto-lita wheel without a hub.
Will install the hub on this wheel...
The screws I already have don't fit the hub.
Need to get the correct screws...
Needs a horn button...
Found a Lecarra horn button in one of the flat file drawers...
The smaller hardware at the bottom is the right size for the hub.
The ones I need should have a tapered head and be slightly shorter than silver screw... (the screws go into the hub and bottom out if they're too long)
Will have to go to the local hardware store to find the right screws...