MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front and rear wall mount options, jam nut, and box mount receptacles, these connectors offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. The aluminum shells come with various plating options, including cadmium-free finishes, ensuring durability and reliability. Operating in temperatures ranging from -65°C to 200°C, these connectors are ideal for military and industrial applications requiring high-performance connectivity.