The MIL-DTL-38999 Series II connectors boast high-performance with up to 128 contacts housed within an environmentally sealed insert. Designed for harsh environments, they offer a wide operating temperature range from -65°C to 200°C. Featuring various mounting options including front wall, rear wall, jam nut, and box mounts, these connectors are versatile in their applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Crafted from durable aluminum, they come with a choice of plating options, including cadmium-free finishes for RoHS compliance. With a rugged construction and gold-plated contacts, these connectors ensure reliable conductivity in demanding conditions, making them ideal for military and aerospace applications.