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 styles like front wall mount, rear wall mount, jam nut, and more, 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, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and plating choices including cadmium and nickel, these connectors ensure reliable performance. Compliant with military specification MIL-DTL-38999 II, they are ideal for demanding industrial and defense applications.