MIL-DTL-38999 Series II connectors, known for their durability and versatility, are designed for harsh environments with up to 128 contacts housed in an insert. These connectors are environmentally sealed, ensuring reliable performance in extreme conditions. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, guaranteeing secure connections. Constructed with aluminum shells and offering multiple plating options including cadmium-free finishes, they meet stringent military specifications. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for aerospace, defense, and industrial applications.