tukiavain

Tukiavain is a Finnish technical term formed from tuk i and avain, roughly translating to “support key.” It designates a component that provides support and serves as a locating or locking element within an assembly. The exact meaning of tukiavain varies by industry and context, but in mechanical engineering and metalworking it is commonly used to refer to a feature such as a key, dowel, or guide that fixes components in relation to each other or prevents undesired movement.

In practice, a tukiavain can help align a shaft with a hub, maintain a sliding part in its intended track, or distribute loads across an interface. The term also appears in construction or furniture assembly to describe a fastening or aligning element used during assembly or to stabilize parts during handling. Because Finnish industry uses specialized terminology, the precise function of a tukiavain should be inferred from surrounding text or described by a manufacturer.

Translations into English are context-dependent; possible renderings include “support key,” “locating key,” or more specific terms such as locating pin or dowel, depending on whether the element primarily supports, aligns, or locks parts. See also: Avain, Dowel, Locating pin, Key and keyway, Mechanical fastener.