“Typical” tolerances are not universal—they depend on feature type, material, part size, tooling access, and inspection method. Many drawings use a general tolerance block (for example ±0.1 mm) with tighter callouts only where function requires it.
For communication during quoting, it helps to separate critical dimensions from nice-to-have targets. Over-tightening non-functional surfaces can add cost without improving assembly fit.
If you need very tight bore or thickness control, say whether grinding or secondary lapping is acceptable. Sometimes a slightly looser machined tolerance plus a controlled secondary op is more reliable than pushing everything in one setup.