Are these like the ones used on your '46? If it makes any difference, new adjusting screws have Phillips heads instead of slotted. The flat adjusting nuts are used on my '54. One was metal, the others were aftermarket nylon. The larger one with tabs is wrong.
Available from The Truck Shop, Classic Parts, and The Filling Station. Search "Headlight" or "Headlight Adjuster." I bought screws and nuts from one of them, but forgot which. Call to confirm the style of adjusting nut if you need the nuts, too.