The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and offering various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. With a wide operating temperature range of -65°C to 200°C, these connectors ensure reliable performance in extreme conditions. Made of aluminum with options for plating finishes including electroless nickel and cadmium olive drab, they are environmentally sealed and RoHS compliant. Utilizing M39029 rear release crimp contacts, they guarantee secure and durable connections. Ideal for military and industrial applications requiring high reliability, these connectors are specified for their durability and performance in demanding environments.