MIL-DTL-38999 Series II connectors, featuring up to 128 contacts in an insert, offer durable connectivity for harsh environments. With a wide operating temperature range from -65 °C to 200 °C, these environmentally sealed connectors are ideal for demanding applications. Available in various mounting styles such as front wall mount, rear wall mount, and jam nut receptacles, they provide versatility for different installation needs. The aluminum shells come in multiple plating options, including RoHS certified finishes, ensuring both performance and compliance. These connectors, utilizing M39029 rear release crimp contacts, assure reliable signal transmission with options for 9 shell sizes and 52 insert arrangements. A key feature is the bayonet coupling for secure mating, while the gold contact plating enhances conductivity. Perfect for military and industrial use, they meet stringent MIL-DTL-38999 II specifications, guaranteeing ruggedness and longevity in the field.