7/16"UNF x 5/16" unions?
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  1. #1
    Official RnS Addict Stroprock's Avatar
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    7/16"UNF x 5/16" unions?

    Is there anyone who sells 7/16" UNF fuel/brake pipe unions for 5/16" (8mm) hard line ? I know its a funny size and won't leave much wall thickness, but does such a size even exist?
    The kids aren't alright...

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    Official RnS Addict bigyellataxi's Avatar
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    I keep 7/16" male tube nuts in stock, need to know if you want 20 or 24 tpi.
    I can check on Tuesday if they would be able to be opened out to 8mm...
    01162761131 during work hours (apart from bank holidays!!) Guy

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    Official RnS Addict 35kid's Avatar
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    you get unions for 5/16 hard line quite easily, not sure about the 7/16 side though, normally the other side of the union is NPT fitting not unf. you may need to use some kind of adapter if you cant get the size you need.
    Last edited by 35kid; 13-04-2017 at 22:54.

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    I'm Not Jed Clampett stueeee's Avatar
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    well,
    My Zeus book gives the core of a 7/16" (0.4375") UNF bolt (i.e. as in a tube nut) as being 0.376" -otherwise, that's a Gnat's cock over 3/8". Which would leave you with 1/32" wall thickness against the root of the thread -you'd definitely need something bigger for safety's sake.
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  7. #5
    Official RnS Addict Stroprock's Avatar
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    Quote Originally Posted by stueeee View Post
    well,
    My Zeus book gives the core of a 7/16" (0.4375") UNF bolt (i.e. as in a tube nut) as being 0.376" -otherwise, that's a Gnat's cock over 3/8". Which would leave you with 1/32" wall thickness against the root of the thread -you'd definitely need something bigger for safety's sake.
    Hmm, I think I agree. Will go bigger
    The kids aren't alright...

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