About 14,100 results
Open links in new tab
  1. 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 …

  2. Metric screw thread: M Profile calculator - 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 …

  3. Theoretical Machinist

    Jul 2, 2020 · Machinist Website with machining information and calculators.

  4. Tap drill size calculators - Theoretical Machinist

    Dec 19, 2019 · NOTE: The tap drill size of a hole that will be cold form tapped is usually bigger than it cutting tap counterpart. Thread percentage: (77% thread is what you want to use) A …

  5. ISO Tolerance Calculator - Theoretical Machinist

    Jan 25, 2020 · ISO Tolerance Calculator ... Description The calculations are based on the British standard Metric ISO Limits and Fits. All internal calculations are done in metric millimeters to a …

  6. Tap Drill Size by percentages chart - Theoretical Machinist

    Feb 20, 2015 · Quick imperial and metric tap drill size chart using thread percentages

  7. True Position Calculator - Theoretical Machinist

    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 …

  8. Theoretical Machinist SiteMap

    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 imperial screw thread calculator …

  9. Imperial RPM / Feed Calculators - Theoretical Machinist

    Apr 12, 2015 · Rpm and feed calculators and material removal rate using; surface feet per minute, diameter of tool or stock and chip load.

  10. 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 …