MIL-DTL-38999 Series I connectors, designated as MS27505E17A6PB, are high-performance electrical receptacles designed for back panel and box mounting applications in harsh environments. With a rugged aluminum shell construction and available in various plating options including gold, electroless nickel, and cadmium finishes, these connectors offer exceptional durability and corrosion resistance. Featuring 6 removable crimp contacts, they provide reliable and secure connections, rated for up to 500 mating cycles. Engineered to meet stringent military specifications, these circular connectors ensure optimal performance in extreme conditions, with an operating temperature range of -65°C to 150°C. Suitable for use in aerospace, defense, and other hi-rel applications, the MS27505E17A6PB is a trusted choice for demanding connectivity needs.