The MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts in an insert for secure connectivity. Featuring a wide operating temperature range from -65 °C to 200 °C, these connectors are ideal for rugged applications. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. With options for straight, RFI grounding, and standard plugs, along with 52 insert arrangements using M39029 crimp contacts, they ensure reliable performance. Constructed with aluminum shells and offering multiple plating choices including cadmium-free finishes, these connectors meet RoHS compliance standards. Perfect for military and industrial use, they provide durability and protection in demanding conditions.