The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in a single insert. With a wide operating temperature range from -65°C to 200°C, these connectors are ideal for demanding applications. Available in various mounting styles including front and rear wall mount, jam nut, and box mount, they provide versatility in installation. Featuring aluminum shells with multiple plating options, including RoHS compliant finishes, these connectors ensure durability and reliability. The connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, meeting stringent military specifications for performance. Perfect for use in defense, aerospace, and other mission-critical systems, the MIL-DTL-38999 Series II connectors guarantee secure and efficient electrical connections in challenging environments.