MIL-DTL-38999 Series II connectors feature up to 128 contacts and durable environmental sealing, suitable for harsh operating conditions with a wide temperature range of -65°C to 200°C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure secure and reliable connections. With 52 insert arrangements and M39029 rear release crimp contacts, they offer versatility and ease of installation. Constructed with aluminum shells and offered in different plating options, such as gold and electroless nickel, they meet military specifications for performance and durability. RoHS compliant finishes are also available, making them environmentally friendly. Suitable for applications requiring high reliability in challenging environments, these connectors are ideal for military, aerospace, and industrial use.