MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mount types including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility in installation. With options for straight, RFI grounding, and standard plugs, they come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offered in different plating finishes such as electroless nickel and olive drab cadmium, they ensure durability and reliability. Meeting MIL-DTL-38999 II military specifications, these connectors are ideal for applications requiring high performance in demanding environments.