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    • I'm sorry that your browser does not support frames, but it was the only way I could find to display the drill charts clearly.
    In addition to the links above, inviting you to view some of my other pages that do not contain frames, you can download the Drill Sizes Chart as Text (Wordpad.doc) 13.4 kb or as Zipfile (Winzip) 3.26 kb.

    The Links below will allow you to view the bottom frames, containing the data for the various listed threads. Unfortunately there are no return links on these pages, and you will have to use your browser's Back Button to return.

  • BA (British Association Threads)
  • BSC (British Standard Cycle Threads)
  • BSF (British Standard Fine Threads)
  • BSP (British Standard Pipe Threads)
  • BSTP (British Standard Taper Pipe Threads)
  • BSW (British Standard Whitworth Threads)
  • CEI (Cycle Engineers Institute Threads)
  • ISO (International Standards Organization) Metric Coarse Threads
  • ISO (International Standards Organization) Metric Fine Threads
  • ISO (International Standards Organization) Metric Special Pitches Threads
  • Drill Sizes Chart
  • UNC (Unified Coarse Threads)
  • UNF (Unified Coarse Threads)

    • Sorry for the inconvenience. I hope you find the charts usefull

    Brian Morgan

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