Fits and Tolerances

Look up ISO 286-2 hole and shaft tolerances, calculate clearance and interference fits, and revisit recent results—quickly and accurately.

Fits & Tolerances is a practical engineering tool for looking up dimensional tolerances and calculating mechanical fits according to ISO 286-2.

KEY FEATURES

• Look up standard hole and shaft tolerances for nominal sizes up to 3,150 mm. • View upper and lower deviations, tolerance values, and resulting limit dimensions. • Calculate complete hole-basis and shaft-basis fits. • Determine maximum and minimum clearance or interference. • Identify clearance, transition, and interference fits. • Explore commonly used fit recommendations and their typical applications. • Quickly revisit the 10 most recent tolerance lookups and the 10 most recent fit calculations. • Expand history entries to review complete calculation details. • Perform core calculations directly on your device.

DESIGNED FOR

• Mechanical engineers • Manufacturing and machining professionals • Technical students and instructors • Designers working with shafts, holes, and precision assemblies

The app provides a clear and convenient reference for engineering calculations. Results should be verified against the applicable technical requirements before being used for critical manufacturing or inspection decisions.

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