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Tolerance Mate
On Google Play: ISO 286 Tolerance Hole & Shaft
ISO 286 tolerance calculation, fit analysis and PDF reports in one app.
Get it onGoogle PlayLast updated: November 2, 2026
- ISO 286-1 / 286-2
- Fit analysis
- PDF report
- 6 languages
Screenshots
What does it do?
Tolerance Mate is an engineering assistant that calculates hole and shaft tolerances to ISO 286-1 and ISO 286-2 in seconds. No more flipping through tolerance tables or making manual calculation errors.
Enter the nominal size, pick classes such as H7/g6 or JS5/h6, and the upper and lower limits, deviations in microns and IT grades are calculated automatically. The app also tells you the character of the fit: clearance, interference or transition.
Features
ISO 286 engine
- Hole and shaft tolerance class selection by nominal size
- Upper and lower limits, deviations in microns
- All IT tolerance grades calculated automatically
Smart fit analysis
- Fit type: clearance, interference or transition
- Maximum and minimum clearance or interference
- Assembly risks visible before production
Graphical view
- Hole and shaft tolerance zones drawn against the zero line
- Understand the assembly logic at a glance
Professional PDF report
- Results, technical data and the chart in one report
- Ready for quality control, customers and production documents
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