MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options like front wall, rear wall, jam nut, and box mount receptacles, they offer versatility in installation. With options for straight, RFI grounding, and standard plugs, they cater to different connectivity needs. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Crafted with aluminum shells and various plating choices including cadmium and nickel, they guarantee durability. With RoHS compliant finishes available, they meet environmental standards. These connectors, specified under MIL-DTL-38999 II, are ideal for demanding applications in aerospace, defense, and industrial settings.