MIL-DTL-38999 Series II connectors are designed for rugged environments, offering up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range from -65 °C to 200 °C, these connectors ensure reliable performance in harsh conditions. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and plated with options like electroless nickel, they meet stringent military specifications for durability. Perfect for applications requiring high reliability, these connectors are RoHS compliant, offering peace of mind for environmental regulations.