MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable connectivity. Constructed with aluminum shells and plated in options like electroless nickel and cadmium finishes, they meet stringent military specifications. Perfect for aerospace, defense, and industrial applications, these connectors offer durability and performance in demanding environments.