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 from -65 °C to 200 °C. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles. The connectors come in aluminum shells with plating options such as cadmium and nickel, offering RoHS certified finishes. Utilizing M39029 rear release crimp contacts, they ensure reliable connections with 500 mating cycles. Suitable for military and industrial applications, these connectors provide EMI/RFI shielding and conductivity, meeting stringent environment resistant standards.