kierteys

Kierteys is a Finnish term that broadly refers to the concept of thread or screw thread. It describes the helical ridge, groove, or crest that is on an external or internal cylindrical or conical surface. This feature is fundamental to the function of screws, bolts, nuts, and many other mechanical fasteners.

The primary purpose of a kierteys is to convert a rotational force into a linear force, or vice versa. This is achieved through the inclined plane of the thread. When a rotational force is applied, the thread engages with a corresponding internal thread (in a nut or tapped hole) or external thread (on a bolt or screw), causing linear motion. The pitch of the thread, which is the distance between adjacent crests, determines how much linear motion occurs for each full rotation.

Kierteys can be found in various forms, with different shapes and sizes tailored for specific applications. Common thread forms include the V-thread, square thread, Acme thread, and buttress thread, each offering different advantages in terms of strength, efficiency, and ease of manufacturing. The external kierteys is typically found on screws and bolts, while internal kierteys is found in nuts and tapped holes. The precise manufacturing of kierteys is crucial for ensuring proper fit and function of mechanical assemblies.