The 2.9 mm Interlocking Screw is a precision-engineered orthopedic implant designed to lock intramedullary nails securely in place, providing rotational and axial stability to long bone fractures. Made from high-strength stainless steel or titanium, this screw is typically fully threaded, with a self-tapping or self-drilling tip, depending on the design, to facilitate easier insertion without the need for pre-tapping.

With a diameter of 2.9 mm, it is commonly used in smaller diameter nails or in anatomically constrained areas such as the humerus, radius, ulna, tibia, or pediatric femur. These screws pass through pre-formed holes in the intramedullary nail and anchor into the cortical bone, effectively locking the implant in place and preventing rotation or shortening of the fracture site.

They are available in various lengths, often measured in 2 mm increments, to suit different bone diameters and patient anatomies.