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Tolerance Quick Reference Sheet – Free PDF Download

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Tolerance Quick Reference Sheet (Free PDF, 2 pages)

ISO 286 IT grades, ISO 2768 general tolerances, and surface roughness by process – the tables our quoting engineers keep on the desk.

What is inside

  • ISO 286 IT grade table, 0-500 mm, grades IT6-IT12 in microns
  • Which process actually holds which grade (turning vs grinding vs EDM)
  • ISO 2768 f/m/c/v general tolerance table for unmarked dimensions
  • How we read fit callouts like 25H7/g6 when quoting – and where drawings usually over-specify

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