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NPS fittings on air tools

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  • NPS fittings on air tools

    I recently picked up a bunch of airtools at a garage sale. Some of them have a 1/4" male NPS fitting on them. I cannot for the life of me find any hardware store that carries any NPS stuff that I can use to rig up an air hose to. I know you're not supposed to use NPT and NPS together, but would it work well enough?

  • #2
    never heard of nps. try mcmaster.com
    Dynasty 200 DX
    Millermatic 175
    Spectrum 375
    All kinds of Smith OA gear

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    • #3
      NPS = National Pipe Straight

      Straight threads as opposed to NPT which are tapered and seal with an interference fit. Use teflon tape to seal NPS threads.

      Your 1/4" threads are 1/4" x 18.

      Home Depot, Lowes, or any of the big box stores will have plenty of choices for NPS air fittings. Check the air tool section.

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      • #4
        Just be carefull when starting the threads. It's really easy to cross-thread a fitting when you try to start tapered threads in a straight-thread fitting. Teflon tape or dope is needed, though.

        Hank
        ...from the Gadget Garage
        Millermatic 210 w/3035, BWE
        Handler 210 w/DP3035
        TA185TSW
        Victor O/A "J" series, SuperRange

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