MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, offering robust environmental sealing and a wide operating temperature range of -65 °C to 200 °C. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, these connectors are designed for harsh environments. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connectivity in aerospace, defense, and industrial applications. Constructed with aluminum shells and a choice of plating options including cadmium-free finishes, they meet stringent military specifications for performance and durability. Perfect for back panel installations, these connectors provide secure and efficient electrical connections in demanding environments.