MS27505E17B99SD is a high-performance MIL-DTL-38999 Series I connector, featuring a back panel box mounting flange for secure installation. With 23 gold-plated removable crimp contacts, this female receptacle ensures reliable conductivity in harsh environments. Its durable aluminum shell, coated with electroless nickel and cadmium olive drab, offers excellent corrosion resistance. Designed for military and aerospace applications, this connector is RoHS compliant and rated for service class E, with a wide operating temperature range from -65°C to 175°C. Suitable for both box and through bulkhead mounting, it guarantees 500 mating cycles and superior environmental protection, making it ideal for mission-critical systems.