We always specify a general tolerance in the drawing header. Additional special tolerances are specified next to the dimension to which the tolerance is to apply or as text on the extrusion drawing. This special tolerance takes presidence over the general tolerance.
We usually apply the following general tolerances to aluminium extrusions:
For cutting processing of aluminium extrusions for parts/components, the following tolerance is usually applied:
Unfortunately, for reasons of copyright we are unable to describe the above tolerances in detail. Tolerances must instead be ordered from the standardisation body operating in the relevant country. In Sweden, this is SIS – The Swedish Standards Institute.