Nimelliskooksi

Nimelliskooksi is a Finnish term used in technical and industrial contexts to denote the nominal size of a component or product. It refers to the size intended for design and reference, rather than the exact finished dimension, which can vary within manufacturing tolerances. In practice, nimelliskooksi serves as a stable label in drawings, catalogs, and procurement.

The word combines nimellinen (nominal) and koko (size) and uses the translative form nimelliskooksi to indicate “as nominal size” in phrases such as nimelliskooksi 50 mm. In Finnish technical writing and product catalogs, nimelliskooksi is commonly encountered when specifying dimensions alongside tolerances defined elsewhere in the document. It is analogous to the English concept of nominal size or nominal diameter.

In application, the nominal size is not a guarantee of the actual dimension. Tolerances define permissible variation, and quality control ensures that actual measurements fall within specified limits. Users should consult detailed drawings or inspection reports for exact measurements. The concept is used across sectors such as fasteners, piping, fittings, bearings, and other mechanical components, and it aligns with international standards that distinguish between nominal sizes and actual dimensions.