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      NPT (National Pipe Taper) Thread Gauges

      Go & No-Go Plug & Ring gauges from Insize & premium German supplier JBO in National Pipe Taper (NPT) thread form.

        Shop Now NPT National Pipe Taper Plug Gauges
        Shop Now NPT National Pipe Taper Ring Gauges
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      2. 1 1/2"
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      4. 1 1/4"
      5. 1 1/4“
      6. 1/16"
      7. 1/16“
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      10. 1/4"
      11. 1/4“
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      13. 1/8“
      14. 1“
      15. 2
      16. 2 1/2"
      17. 2 1/2“
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      20. 3 1/2"
      21. 3 1/2“
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      23. 3/4“
      24. 3/8"
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      TPI
      1. 11.5
      2. 14
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      2. Yes
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      1. Insize
      2. JBO (Johs Boss)
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