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  1. Metric Screw Threads: M Profile - Theoretical Machinist

    Jun 25, 2025 · Glossary Thread calculator: All calculated results are based on; Basic outside diameter, Pitch, Location and Pitch Tolerances as per "my" best interpretation of ASME …

  2. Tap drill size calculators - Theoretical Machinist

    Dec 19, 2019 · Tap drill size calculators for unified national imperal and metric threads

  3. UN imperial screw thread calculator - Theoretical Machinist

    Feb 13, 2015 · Glossary Thread calculator: All calculated results are based on; Basic outside diameter, number of threads per inch, series designation and class tolerances. The algorithms …

  4. ISO Tolerance Calculator - Theoretical Machinist

    Jan 25, 2020 · 4- Some internal Grade values must be rounded down to a precision of 3 decimal metric millimeter precision. Units (mm / in): Select between millimeters and inches the unit of …

  5. Theoretical Machinist SiteMap

    Forums Sitemap Calculators Imperial and Metric Tap drill size calculators Find hole size or thread percentage for cutting taps and cold forming taps in both imperial and metric sizes Unified …

  6. TheoreticalMachinist Website News

    Mar 5, 2015 · News: Metric thread calculator The Metric thread calculator has been updated and is now fully functional. Threads that are classes: 6g, 4g6g and 6H have been tested thoroughly …

  7. Smartphone Apps - Theoretical Machinist

    Metric & Imperial Cold Forming tap drill size by Percentage Pipe Tap & Die threads chart UNC, UNF, UNEF, UNS, UN ISO Metric: Coarse, Fine NPT, NPTF, NPS, NPSF, BSPT, BSPP …

  8. True Position Calculator

    NOTE: The calculator is incomplete and additional features will be added later on. Please report any bugs or erroneous results here. Thank you. The true position calculator is a tool to …

  9. Common imperial and metric threads sizes.

    Common imperial and metric threads sizes. Common imperial and metric threads sizes popup chart.

  10. Imperial to and from Metric - Theoretical Machinist

    Feb 15, 2015 · Unit conversion Imperial to and from Metric / decimal degree to sexagesimal degree