The 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 styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. With options for straight, RFI grounding, and standard plugs, these connectors come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections. Made of aluminum, they are offered in plating options such as electroless nickel and cadmium finishes. These RoHS compliant connectors are ideal for military and industrial use, providing durability and performance in demanding conditions.