Kiinnitysvidu

Kiinnitysvidu is a Finnish term used in some technical contexts to describe a fastening element that secures two or more components by means of a pin or pin-like fastener. It is not a single standardized product, but rather a category that covers various devices designed to hold parts together, locate components, or permit controlled disassembly.

Common forms of kiinnitysvidu include dowel pins, spring or roll pins, cotter pins, and clevis pins with retaining features. Dowel pins provide precise alignment and are often press-fit into a hole to locate parts. Spring pins deform to fill the hole and resist withdrawal, offering quick assembly and disassembly. Cotter pins and similar retainers are used with holes and fasteners to secure a bolt or axle in place. Clevis pins, sometimes paired with retaining clips or a nut, are used where removable yet secure connections are needed. The category also covers locking pins and other pin-based devices that provide a fixating function.

Materials and manufacturing methods for kiinnitysvidu vary by application but typically include carbon steel, stainless steel, and alloy steels, with surface treatments such as plating or hardening to improve wear and corrosion resistance. Tolerances are chosen according to the type (for example, interference or slip-fit for dowel pins) and the intended load. Installation considerations include hole size, alignment accuracy, surface finish, and appropriate protective measures to prevent corrosion or galling.

In practice, kiinnitysvidu are found in machinery, automotive assemblies, furniture, electronics enclosures, and construction equipment. Selection depends on load, frequency of assembly, environmental conditions, and whether a removable or permanent fixation is required.