Engineering Tools

Drill & Tolerance Calculator

Click any row to see a live drilling animation — machine, drill bit, chip ejection, and the finished hole cross-section with thread profile and tolerance callouts.

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Filter by hole type
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Click any row in the table
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Watch the drilling animation
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See transparent cross-section with specs
Size Pitch (mm) Tap Drill ⌀ Close Fit ⌀ Free Fit ⌀ H7 Tol. (µm) CB ⌀ × Depth CSK ⌀
Click any row to open the full 3D CNC drilling simulation
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3D CNC Simulation
Click any row in the table to open a full WebGL drilling simulation with real machine, chips, and cross-section view.
What you will see
✦ CNC machine with vise & workpiece
✦ Tap drill → Counterbore → CSK sequence
✦ Real chip & spark ejection
✦ Transparent cross-section with dimensions
✦ 34-second full animation + replay
← SELECT ANY ROW TO LAUNCH