The MIL-DTL-38999 Series II connectors offer rugged performance with up to 128 contacts, designed for harsh environments. Featuring a wide operating temperature range of -65°C to 200°C, these circular receptacles are ideal for military and industrial applications. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different installation requirements. With gold-plated removable crimp contacts, they ensure reliable conductivity and durability. The connectors are housed in aluminum shells with a choice of plating finishes, including electroless nickel and cadmium, meeting stringent environmental standards. Designed for 500 mating cycles, they offer long-lasting performance in demanding conditions. Suitable for use in EMI/RFI sensitive environments, these connectors are essential for maintaining secure and efficient electrical connections.