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. These connectors, available in various mount types such as front wall mount, rear wall mount, and jam nut receptacles, offer versatility for different applications. With options for straight, RFI grounding, and standard plugs, they come in 9 shell sizes and 52 insert arrangements. Constructed with aluminum shells and various plating options including gold, electroless nickel, and cadmium finishes, they ensure durability and reliability. Meeting military specification MIL-DTL-38999 II, these connectors are ideal for demanding environments where rugged performance is essential.