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 come in various configurations such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts. Constructed with aluminum shells, they offer plating options like cadmium and nickel. With RoHS certified finishes, these connectors guarantee reliable performance in military and industrial applications, meeting stringent environmental and operational requirements.