The FC patch cord employs the original FC connector featuring a secure threaded nut connection method. 6mm . A patch cord is a fiber optic cable used to attach one device to another for signal routing. FC connectors are generally constructed with a metal housing and are nickel-plated. At ZION Communication, we design and manufacture a full range of fiber patch cords for: This guide will help you quickly understand the main types of. Get low-loss fiber patch cables & cords with various connector options that support fiber optic cabling up to 400G.