This document provides the technical specifications for an armored patch cord that uses a small-caliber stainless steel tube for protection. It avoids damage from twisting and has high tensile and stress coefficients, making it convenient for highly secure applications without damaging the cable. The cord can be used in machine rooms, FTTH, area networks, test equipment, national defense, sensors, communications, and antenna TV systems. Specifications include single-mode PC, UPC, and APC options with low insertion attenuation and high return loss and repeatability, an operating temperature range of -40°C to +80°C, and an outer diameter of 3.0mm.