M8 blind rivet nut. These blind rivet nuts are the solution when setting a nut thread is impractical or impossible. They have an internal thread and can be set completely from one side. They eliminate the need for a conventional nut on the back of the joined materials and increase work efficiency as the work can be done from one side. Especially when fastening thin materials, blind rivet nuts serve as cage nuts or rivets and are ideal for workpieces with a short clamping length (up to 3.5 mm).