Fits & Tolerances Calculator (ISO 286)

Calculate ISO 286 shaft and hole tolerances, clearance fits, interference fits, and transition fits for precision assemblies.

Fits Tolerances

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Formula

ISO 286 fundamental deviations + IT grades

Hole/shaft limits from standard tables.

ISO 286

Assumptions & limits

  • Standard temperature 20 °C
  • Form errors not included in basic fit calculation
AluCalc 2026-07-12