Bolt for series 20 profiles, with self-locking head, that locks in place when you turn it 90 degrees. The flat sides allows you to drop the selv-locking bolts in anywhere it the slots.
The bolt is easy to use eg. brackets, if you with to use a bolt with higher torque.
The length is the thread including the 2-3mm in the bottom.
Bolt for series 20 profiles, with self-locking head, that locks in place when you turn it 90 degrees.