Sisäsäikeinen

Sisäsäikeinen is a Finnish term that translates to "internally threaded" or "female threaded" in English. It refers to a component that has a threaded hole designed to accept a bolt or screw, which is the external thread. This type of threading is common in various mechanical applications, allowing for the secure joining of two or more parts.

Components with internal threads are found in a wide range of items, from simple fasteners like nuts and housing components to more complex machinery parts. The size and pitch of the internal threads must precisely match the external threads of the mating component to ensure a secure and functional connection. Proper mating is crucial for the structural integrity and operational efficiency of the assembled parts.

The manufacturing process for internal threads typically involves processes like tapping, where a tool cuts the helical grooves into a pre-drilled hole, or thread milling. The accuracy of the internal threading is critical for the final assembly's performance and longevity.