Maskinskruvar

Maskinskruvar, known in English as machine screws, are cylindrical fasteners with machine threads designed to mate with a tapped hole or with a nut. They are used to join metal parts in precise assemblies where consistent dimensions and strong clamping force are required. The term maskinskruvar can refer to a range of screw types that share standardized machine threads rather than wood or self-tapping threads.

Threads and forms: Machine screws come in metric (ISO) and imperial (UNC/UNF) thread forms, with a broad range of diameters and pitches. Lengths are measured from beneath the head along the screw. Heads and drivers vary widely, including flat, pan, round, button, and socket types, with drives such as slotted, Phillips, Pozidriv, hex socket, Allen, and Torx. They are intended to be used with a tapped hole or with a nut, and sometimes with washers to distribute load.

Materials and finishes: Common materials include carbon steel, stainless steel (such as grades 304 and 316), brass, and plastic or nylon in specialty cases. Finishes range from zinc plating and black oxide to passivation or plain metal, chosen for corrosion resistance, strength, and appearance.

Applications and considerations: Machine screws are widely used in electronics, automotive, machinery, and appliance assemblies, as well as in furniture and enclosures. Selection depends on strength, corrosion resistance, environment, and compatibility with mating parts. Proper installation typically requires correct torque, appropriate lubrication on metal-to-metal interfaces, and, when necessary, installation with nuts or threaded inserts.