MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility in military and aerospace applications. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connectivity. Crafted from aluminum with multiple plating options, including RoHS certified finishes, they provide durability and corrosion resistance. Perfect for demanding environments, these connectors are essential for ensuring secure and efficient electrical connections in critical systems.