hexpääruuvi

A hexpääruuvi, also known as a socket head cap screw or Allen bolt, is a type of screw characterized by a cylindrical head with a hexagonal socket for driving. This socket allows for high torque application using a hex key or Allen wrench, making it suitable for applications requiring a strong and secure fastening.

The design of the hexpääruuvi provides a flush or nearly flush finish when fully seated, as the head is cylindrical and typically sits within a counterbored hole. This aesthetic and functional advantage makes them popular in machinery, furniture, and electronic enclosures where a clean appearance and strong hold are desired.

Hexpääruuvit are commonly manufactured from various materials, including steel (often case-hardened for increased strength), stainless steel for corrosion resistance, and sometimes brass or aluminum for specific applications. They are available in a wide range of metric and imperial sizes, thread pitches, and lengths to suit diverse engineering needs.

The internal hex drive offers several benefits over external drive types like slotted or Phillips screws. It reduces the risk of cam-out, where the driver slips out of the recess, especially under high torque. The socket design also protects the drive recess from dirt and debris. Their versatility and reliability have made hexpääruuvit a standard fastener in numerous industries.