The MIL-DTL-38999 Series I connectors, designated as MS27496, are high-performance electrical receptacles designed for harsh environments. Featuring a box mounting flange shell style, these connectors are equipped with 18 removable crimp contacts, each plated with gold for optimal conductivity. With a wide operating temperature range of -65 °C to 175 °C, they are suitable for demanding applications. Constructed with a rugged aluminum shell, these connectors offer excellent durability. Their bayonet coupling mechanism ensures secure mating, while their environment-resistant design, including electroless nickel and cadmium olive drab finish coatings, provides reliable performance in challenging conditions. Compliant with military specification MIL-DTL-38999 and RoHS regulations, these connectors are ideal for use in aerospace, defense, and other high-reliability applications.