Skruven

Skruven is the definite form of the Swedish noun skruv, meaning screw. It denotes a type of fastener that converts rotational motion into linear motion through a helical thread engaging with a corresponding threaded hole or nut. The term is common in technical writing and everyday language in Sweden.

A screw typically consists of a cylindrical shaft with a helical thread and a head that provides a drive surface. The thread allows a screw to advance as it is turned, pulling materials together. Drive surfaces include slotted, Phillips, Pozidriv, hex, Torx, and other socket designs.

Uses and standards: Screws are used to join wood, metal, plastic, and other materials. Selection depends on material, load, environment, and whether a nut or tapped hole is available. In industry, sizes are specified by diameter and length, with metric designations (for example M6 × 20). Materials range from steel to stainless steel and brass.

Variants and features: Wood screws typically have a tapered shank and sharp point; self-tapping and self-drilling screws are common for metal and plastic applications; machine screws are fully threaded and used with nuts or threaded bushings. Surface coatings improve corrosion resistance and appearance.

See also: screw, fastener, thread.