These are left inside during the production of traverses and help connecting the rail and the traverse after production. Four are needed for each traverse.

These are used to decrease the pressure on the traverse rails' inclination surfaces and to obtain a good seating surface. A big part of the bulk is carried by angle plates.

The function as a lock between the rail and the traverse.

The tension clamp creates tension between the bolts and the triphones in order to prevent them from loosening and unraveling.

Seled neutralize the electrostatic charge between the rails and the train. They are very important among the fasteners.