The MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts and durable aluminum shells. With a wide operating temperature range of -65°C to 200°C, they ensure reliable performance in extreme conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount, these connectors offer versatility for different applications. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. With options for RoHS compliant finishes, such as electroless nickel plating, they meet environmental standards. Ideal for military and industrial use, these connectors provide EMI/RFI shielding and are rated for 500 mating cycles, ensuring long-term reliability.