This box of old parts will give you an idea of components used with the exposed lug wheel assemblies.
The designs were bolts threaded into magnesium or into long shank steel lug nuts.
When the prototype 1965 MUSTANG GT350 race car was first completed and tested (SFM5R002) it also used the same lug nuts. When research for that car's restoration was in progress I reverse engineered the design into a set of drawings for the restoration team in case they didn't find any new old stock ones or enough new old stock ones. These are the general views I created but they illustrate the threading in the nuts.
The washers are captured. They have to be pressed on but will free turn once in the undercuts made for them.
