The MS3057-10C-1 is a circular electrical connector manufactured by Crown Industries. It is a 10-contact cylindrical MIL-DTL-38999 series III connector intended for use in aerospace applications. The 13-gauge steel backshell has an SAE-AS81049 compliant nickel-plated finish, and MS grommet seals available for use in pressurised systems. It has a keyed mating system and comes with an installed insert for maximum cable protection. The standard contacts are gold-plated for optimum electrical performance, and can be increased as required by the customer. The typical application for the MS3057-10C-1 is in aircraft wiring where high-frequency electrical signals need to be transmitted.