MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts in an insert. Featuring front and rear wall mount options, jam nut, and box mount receptacles, they offer versatility for various applications. With a wide operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance in extreme conditions. Utilizing M39029 rear release crimp contacts, they come in 9 shell sizes and 52 insert arrangements, with aluminum shells and various plating options. Certified for RoHS compliance, these connectors are ideal for military and industrial use, providing secure and durable electrical connections.