MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 gold-plated contacts in a rugged aluminum shell. With a wide operating temperature range of -65°C to 200°C, these circular receptacles, including back panel wall mounting options, ensure reliable connectivity in demanding conditions. Utilizing removable crimp contacts, they offer easy maintenance and durability, meeting stringent military specifications for performance and longevity. Various plating options, including electroless nickel, cater to diverse application needs, while their bayonet coupling mechanism guarantees secure mating. RoHS compliant and rated for 500 mating cycles, these connectors are ideal for aerospace, defense, and industrial settings requiring robust and environmentally sealed connectivity solutions.