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Fitting thread id.

Discussion in 'The Garage' started by tarheel, Mar 17, 2004.

  1. tarheel

    tarheel Registered Member

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    i'm pretty familiar w/ standard and metric threads and how to identify them...but what about these "-an" fittings. the place i see them the most is in my summit catalog on the fuel fitting stuff. what's different about them, and do they make a guage to id. them?

    tia,
    matt /forums/images/graemlins/dunno.gif
     
  2. Don

    Don 1/2 ton status

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    "AN" meaning army/navy where the first user's to spec em, year's ago.

    They are a straight thread like a 37* JIC fitting but they won't interchange.

    I don't know if anyone make's a gauge to measure the thread count, ask at a local hydraulic supplier, they carry them too. /forums/images/graemlins/grin.gif
     
  3. BOWTIE

    BOWTIE 1/2 ton status

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  4. m j

    m j 1/2 ton status

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    they are in 16ths
    -4 is ~4/16ths etc

    are you sure they arent a swap for 37* JIC?
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    -4,-6,-8 etc is the hose size in 16th's, doesn't tell you much about the thread itself. I can't recall if JIC threads match up or not, but i know JIC won't seal up to AN stuff.

    Rene
     
  6. m j

    m j 1/2 ton status

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    JIC
    -02 5/16-24
    -03 3/8-24
    -04 7/16-20
    -05 1/2-20
    -06 9/16-18
    -08 3/4-16
    -10 7/8-14

    JIC and AN look the same to me
    they share thread size, pitch, and flare angles
    the hydraulic companies use the terms interchangeably IIRC
    if you can find a -6 JIC to -6 AN adapter please shoot me a link, I love to learn

    I used Goodridge and Aeroquip AN adapter fittings recently and the JIC seems to be sealing pretty good on them
     
  7. Triaged

    Triaged 1/2 ton status

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    JIC has a looser fit thread than AN spec fittings. All the dimensions are the same (AFAIK) but held to looser tolerances. I have heard that up to -6 there is no problem but when you get into the higher sizes (a friend was using -12 on his shocks /forums/images/graemlins/eek.gif) that the JIC won't seal.
     
  8. R72K5

    R72K5 Banned

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    good thread!

    fnally someoen explained and showed what AN is and how it works

    now what about JIC ?
    what is that ?

    thanks /forums/images/graemlins/thumb.gif
     
  9. Don

    Don 1/2 ton status

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    JIC is 37 degrees in both male/female end's. Female cap to a male fitting. Or female nut [on say a 45 degree fitting] to a male fitting. /forums/images/graemlins/grin.gif
     

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