Thread specs of SIIA lug nut?

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  • 1953lr80
    Low Range
    • Apr 2009
    • 15

    Thread specs of SIIA lug nut?

    Anyone know the specs of lug nut threads for a Series IIA? I've been able to find the (Metric) specs for Series III.

    I want to buy a die to clean up the threads on a spare tire bracket (rear station wagon door), but can't figure out if they're UNF or Whitworth, and what threads-per-inch or pitch.
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