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 mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility for different applications. With options for straight, RFI grounding, and standard plugs, they come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options including cadmium-free finishes, these connectors meet stringent military specifications for reliability. Perfect for applications requiring secure and durable electrical connections in demanding conditions.