| Nominal Size (mm) | h6 (Upper es) | h6 (Lower ei) | | :--- | :--- | :--- | | Over 3 up to 6 | 0 | -8 | | Over 6 up to 10 | 0 | -9 | | Over 10 up to 18 | 0 | -11 | | Over 18 up to 30 | 0 | -13 | | Over 30 up to 50 | 0 | -16 | | Over 50 up to 80 | 0 | -19 | | Over 80 up to 120 | 0 | -22 |
Holes are much harder to adjust than shafts. You cannot easily un-bore a hole that has been made too large. Machine the hole, measure it, and turn the shaft to match the fit. iso 286 pdf
(officially titled ISO 286-1:2010 Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 1: Basis of tolerances, deviations and fits ) is the international standard that defines the system of limits and fits for cylindrical workpieces. | Nominal Size (mm) | h6 (Upper es)
Not directly. ISO 286 is a metric (millimeter) standard. For inch-based systems, refer to ANSI B4.2. However, you can convert inches to mm and use ISO 286, though this is not standard practice. For inch-based systems, refer to ANSI B4
Let’s decode 25 H7 :