The MIL-DTL-38999 Series II connectors are designed for demanding environments, with up to 128 contacts housed in a rugged insert. These connectors offer reliable performance in extreme temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they meet versatile installation needs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they ensure durability and RoHS compliance. Ideal for military and industrial applications, these connectors provide efficient electrical connectivity in harsh conditions.