The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in a single insert. With an operating temperature range of -65°C to 200°C, they are ideal for demanding applications. These connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, such as cadmium and nickel, they ensure reliable performance. With RoHS compliant finishes available, these connectors are suitable for a wide range of military and industrial applications.