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looking for an ISO G 1/8 tap

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  • looking for an ISO G 1/8 tap

    Hello,
    I hope everyone is doing well. Things were going well for
    me with a high-pressure bleeder plug I'm putting into a SS housing for a potted tach-connector
    assembly used on a hydraulic drive used at a sea depth of up to 1500 meters.
    I need an ISO G1/8 (28 threads per inch) tap. The one Parker offers costs $131.00 each, and has a lead time of 4 weeks, so they are obviously not the place to deal with.
    I was hoping to get 3 of them, but the price is too high. Does anyone know of a good source
    for these? I could really use any help I can get on this.
    Thanks,
    Ray

  • #2
    aren't these the same as British Standard Pipe Threads? msc# MSC #: 88244959

    http://www1.mscdirect.com/cgi/NNSRIT...-SearchResults
    .

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    • #3
      Yes, I believe it is a British Standard Pipe Thread. I was looking for the ISO and/or DIN designation,so I didn't catch it on my initial MSC search, but the MSC #: 88244959 looks like the right one. Thanks so much for your help. My day is looking brighter now.

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      • #4
        Need to be careful - 'G' threads are parallel, i.e. BSP, not BSPT (taper) as per link.

        Cheers

        .

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        • #5
          Originally posted by Barrington View Post
          Need to be careful - 'G' threads are parallel, i.e. BSP, not BSPT (taper) as per link.

          Cheers

          .
          good catch....would this be the one? Almost wrecked your day hoof

          http://www1.mscdirect.com/cgi/NNSRIT...-SearchResults
          .

          Comment


          • #6
            ISO 228 - replaces DIN 259 (Withworth pipe thread, parallel internal and parallel external.
            These threads do not seal in the threaded portion but seal by tightening two shoulders with a seal ring between them if needed. Used on fittings, valves etc. if a high degree of sealing is required.
            G1/8 - 28
            Outside dia....9.728
            Pitch dia........9.147
            Core dia...8.566

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            • #7
              Hi
              G1/8 BSP 1/8-28
              KBC Tools carries these as well as etap.com
              If you are not in too big a hurry you can usually find them on e-bay
              links:
              http://www.e-taps.com
              http://www.kbctools.com
              please visit my webpage:
              http://motorworks88.webs.com/

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              • #8
                Originally posted by Juergenwt View Post
                ISO 228 - replaces DIN 259 (Withworth pipe thread, parallel internal and parallel external.
                Whoever came up with ISO-G should be strung up by the balls -- I posted about those mongrels when I rebuilt my Eisle cold saw: Whitworth threads with Metric orifices

                European G 1/8 pipe threads?
                http://bbs.homeshopmachinist.net/thr...-threads/page2

                The ISO-R have the BSPT (tapered threads).
                Last edited by lazlo; 03-28-2013, 07:18 PM.
                "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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                • #9
                  I hate those straight 4 flute taps, they cut like ...crap...this is a little pricy but it has lasted me a long while...little effort to cut the thread, nice clean results...

                  http://www.amazon.com/dp/B003JY6N64/ref=biss_dp_t_asn

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