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 styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in application. With options for straight, RFI grounding, and 90-degree cable clamp plugs, these connectors come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Constructed with aluminum shells and offering plating choices like electroless nickel and cadmium finishes, they meet RoHS compliance standards. Suitable for military and industrial use, these connectors provide reliable performance in demanding conditions.