The MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. With a durable aluminum shell and multiple plating options, including RoHS compliant finishes, these connectors ensure long-lasting and secure electrical transmission.Operating temperature ranges from -65 °C to 200 °C, catering to a wide range of applications. Perfect for military and industrial use, the MIL-DTL-38999 Series II connectors deliver exceptional performance and durability in demanding environments.