The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for high-density connectivity. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for demanding applications. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Constructed with aluminum shells and offering RoHS compliant plating options, such as electroless nickel and cadmium finishes, these connectors ensure reliable performance. Utilizing M39029 rear release crimp contacts, they provide secure and efficient connections. Ideal for military and industrial use, these connectors are durable, environmentally sealed, and offer excellent conductivity, making them a reliable choice for critical applications.