ISO 2768 General Tolerances

General tolerances for linear dimensions without an individual tolerance indication (ISO 2768-1). Class shown on the drawing as e.g. "ISO 2768-m".

Nominal sizef — finem — mediumc — coarsev — very coarse
0.5–3 mm±0.05±0.1±0.2
3–6 mm±0.05±0.1±0.3±0.5
6–30 mm±0.1±0.2±0.5±1.0
30–120 mm±0.15±0.3±0.8±1.5
120–400 mm±0.2±0.5±1.2±2.5
400–1000 mm±0.3±0.8±2.0±4.0
1000–2000 mm±0.5±1.2±3.0±6.0

For fitted features use ISO 286 — see the Limits & Fits tool.

A reference aid, not a substitute for engineering judgment. Verify against the governing standard.