Läpimitasta

Läpimitasta is a Finnish term used in mechanical engineering and manufacturing to denote the through diameter of a hole, bore, or channel. The base noun läpimitta means “through diameter,” and läpimitasta is an inflected form that appears in technical descriptions and specifications describing a specific measurement or requirement.

Usage and scope include holes, tubes, or passages that pass completely through a part, as opposed to partial bore features or recessed dimensions. In engineering drawings and manufacturing documentation, the through diameter is a key parameter for ensuring proper fit between components, such as shafts, fasteners, or mating parts, and it can influence assembly tolerance and function.

Measurement and tolerances are applied to establish a target diameter and an allowable deviation. Methods for measurement can range from simple pin or bore gauges to coordinate measuring machines, depending on the required precision and the context of the part. Tolerance standards may be defined by ISO norms or by company-specific guidelines, and they often include references to the measurement location, surface finish, and inspection method.

Context and translation: läpimitasta is primarily used in Finnish technical language, and its English equivalent is generally “through diameter” or “diameter of a through-hole.” Clear documentation of how the diameter is measured, along with units and reference features, helps avoid ambiguity in multi-part assemblies.

Related concepts include läpimitta (the standard term for the through diameter) and other dimensions describing holes, bores, and passages in mechanical design.