MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. This specific model, MS27513, is a receptacle for box mounting, with an extended grommet and crimp type connection. It is part of the military-specification MIL-DTL-38999 II series, known for its reliability and durability. Constructed with an aluminum shell and electroless nickel plating, these connectors offer superior performance and longevity. With 16 gold-plated contacts, they ensure secure and reliable electrical connections in demanding applications. The bayonet coupling mechanism and N keyway polarization provide easy and accurate mating. Suitable for environment-resistant box and through bulkhead mounting, these connectors meet stringent military standards for quality and performance.