TN1-613
It is a type of threaded fastener used to create a strong, reusable thread in softer materials like plastic, wood, or metal. Unlike traditional inserts, it doesn't have a collar around it. The insert has sharp threads that allow it to "tap" into the material as it is screwed in, making it easier to install. These inserts provide a durable and secure thread for screws or bolts to be fastened into, helping to prevent wear and tear over time.