The 553443-4 is a 50-position receptacle connector from the CHAMP Interconnection System, designed for printed circuit board applications. It features ACTION PIN contacts for reliable, solderless board termination. Key physical dimensions include a maximum length (A) of 3.280 inches, a mounting hole spacing (B) of 2.946 inches, and an inner dimension (C) of 2.546 inches. The connector is equipped with two 4-40 UNC-2B threaded holes for secure mounting. This component is ideal for creating robust, high-density connections in various electronic systems.