MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in a sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors feature various mounting options including front wall, rear wall, jam nut, and box mounts. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offered in plating options like electroless nickel and cadmium finishes, these connectors are reliable in demanding applications. Suitable for military use, they meet MIL-DTL-38999 II specifications and are RoHS compliant. The plug connectors, with a straight shell style and removable crimp contacts, ensure secure and durable connections with a mating life of 500 cycles. Perfect for environment-resistant box and bulkhead mounting receptacles, these connectors guarantee conductivity and protection in challenging operating conditions.