The MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts, featuring durable environmental sealing suitable for harsh environments. Operating efficiently in temperatures ranging from -65°C to 200°C, these connectors come in various configurations such as front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable performance. Constructed with aluminum shells and offering multiple plating options including cadmium and nickel finishes, these connectors ensure conductivity and protection. RoHS compliant variants are also available, making them versatile options for military and industrial applications.