The MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert and environmental sealing for reliable performance. With a wide operating temperature range from -65°C to 200°C, these connectors are suitable for harsh conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Constructed with aluminum shells and offering different plating options, such as gold and electroless nickel, these connectors guarantee durability and conductivity. RoHS compliant finishes are also available. Suitable for military and industrial applications, the MIL-DTL-38999 Series II connectors provide a high level of performance and reliability in demanding environments.