MIL-DTL-38999 Series II connectors boast up to 128 contacts within an insert, providing robust connectivity in harsh environments. Designed for military applications, these connectors are environmentally sealed, ensuring reliable performance in extreme conditions ranging from -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, they accommodate different contact sizes, including M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, they guarantee durability and corrosion resistance. With a mating type of bayonet, these connectors ensure secure connections, while their RoHS certified finishes provide peace of mind regarding environmental compliance. Ideal for applications requiring high reliability, these connectors are a dependable choice for demanding environments.