The MIL-DTL-38999 Series II connectors boast exceptional durability and versatility in harsh environments, featuring up to 128 contacts housed in a secure insert. Designed for rugged applications, these connectors are environmentally sealed and can withstand temperatures ranging from -65 °C to 200 °C. Available in various mounting options including front wall, rear wall, jam nut, and box mounts, they offer flexibility in installation. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they ensure reliable connectivity. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium, they meet stringent military standards. The straight plug design with Bayonet coupling and gold contact plating guarantees high performance, making them ideal for critical operations requiring up to 500 mating cycles. RoHS compliant finishes are also available for environmentally conscious applications.