Observed arrival · 2026-11-11
Machining Charts’ ISO fit calculator
A calculator for ISO 286 hole-and-shaft fits that returns part limits and the resulting clearance or interference.
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- People selecting or checking machined hole-and-shaft fits
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- The worked H7/g6 example shows the size step, tolerance widths, deviations, and clearance arithmetic for a 25 mm nominal size.
Field notes
For H7/g6 at 25 mm, the page walks through the size step, identifies IT7 as 21 µm and IT6 as 13 µm, then derives each part’s limits before subtracting them. Its preferred-fits table ranges from loose-running H11/c11 to forced H7/u6 and gives typical applications; the page says the clearance figures change with the selected size.
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Editorial observations of this landing page, not a rating.
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