pysäytysruuveja

Pysäytysruuveja, also known as stop screws or set screws, are small fasteners used to secure an object within or against another object. Unlike typical screws that are used to join two pieces of material together, a pysäytysruuvi is inserted into a threaded hole on one component and then tightened until its end presses against the surface of the other component. This pressure creates friction and holds the two parts in place.

These screws are often headless, meaning they do not have a protruding head like a standard screw. Instead, they are typically driven using a hex key (Allen wrench) or a slot. The absence of a head allows them to be fully recessed, making them ideal for applications where a smooth exterior is desired or where space is limited.

Pysäytysruuveja come in various head types, including cup point, cone point, dog point, and flat point. Each point type offers different holding capabilities depending on the application. For instance, a cup point creates a dimple on the mating surface, while a cone point can embed itself for a stronger hold. They are commonly made from steel, stainless steel, or brass.

Applications for pysäytysruuveja are widespread, including securing pulleys to shafts, preventing collars from slipping on rods, and fixing components in machinery. Their simplicity and effectiveness make them a valuable tool in mechanical engineering and assembly.