The design of the rack makes it possible to find the required bone screws of the right length and thickness immediately as each screw only fits in its intended place. A nitinol flat spring holds the screws made of a titanium alloy at their tip in a special rack. Inside the screwdriver recess, they are held by a pointed protrusion that arises from the body of the rack. The retaining force allows for machine or ultrasonic washing, high-pressure steam cleaning and autoclaving.