MIL-DTL-38999 Series II connectors offer robust performance in harsh environments, featuring up to 128 contacts within an insert. These connectors are designed for front wall mount, rear wall mount, jam nut, and box mount receptacles, with various shell sizes and insert arrangements available. Made of durable aluminum, they ensure reliable connectivity with M39029 rear release crimp contacts. Operating between -65°C and 200°C, these connectors are environmentally sealed and plated for enhanced durability. RoHS compliant options are also offered, making them ideal for a wide range of applications requiring secure and long-lasting electrical connections.