Synthes 204.842 3.5mm Cortex Screw Self-Taping 42mm

Synthes 204.842 3.5mm Cortex Screw Self-Taping 42mm

• Model: 204.842 Synthes
• 3.5mm
• A small, threaded, non-bioabsorbable, implantable rod intended for internal orthopaedic fixation by being screwed into a limb bone, rib, the sternum and/or pelvis to hold a plate, nail, rod or prosthesis to the bone, or to provide direct interfragmentary stabilization of a fractured bone; it is not intended to be introduced through the sleeve of a femoral neck fixation plate/sleeve, not used in dentistry/orthodontics, craniofacial or spinal bones, and not dedicated to intramedullary fixation/arthrodesis. It is typically of cortical or cancellous design and has a drive (e.g., slot, cross, star, polygonal) at its proximal end for introduction with a screwdriver.

This medical supply or implant item is in its original manufacturer's packaging. 

The Synthes 204.842 is a 3.5 mm diameter stainless-steel cortex screw, self‑tapping in design, with a total length of 42 mm. It features a thread diameter of 3.5 mm, a core diameter of 2.4 mm, a fine thread pitch of 1.25 mm, a head diameter of 6 mm, and is equipped with a small hexagonal (hex) socket for precise screw insertion.

This screw is engineered for use in cortical bone fixation, often within 3.5 mm DCP (Dynamic Compression Plate) systems, enabling stabilization by acting as a lag screw where appropriate. The self‑tapping feature eliminates the need for pre-tapping, streamlining surgical workflow. Compatibility is straightforward: it requires a 2.5 mm threaded-hole drill bit for the tap, and a 3.5 mm gliding-hole drill bit to prepare the plate hole. The hex socket allows for secure driver engagement, reducing slippage during implantation.