I need a flare fitting for 45 degree standard flare to go from 1/4 to
3/16. A straight union. Know of anywhere I can get this? mcmaster
struck out and so did fittingandadaptors.com. google came up blank.
seems I might need to machine one, where do I find the dimension? are
they in the Machinists handbook?

I know the threads are 3/8-24 and 7/16-20 but I would need to know
shoulder lenghts from threrad to 45 degree seal surface.

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Randy