Hy Village_Idiot, you are correct Eaton did acquire Weatherhead I did get a couple of 6100X2 nuts a couple of weeks ago from my FLAPS for a friends 54 Buick. When you search use the whole number "6100X2" 6100 is just the series part identifier and without the "X2" it doesn't represent a part. Any good FLAPS that has sold Weatherhead would recognise the number and would be able to check for availability if they don't stock it, hope that helps.
