MIL-DTL-38999 Series II connectors offer durable and versatile connectivity with up to 128 contacts in an insert. Designed for harsh environments, these connectors are environmentally sealed and can withstand temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable performance. Crafted from aluminum with a choice of plating options such as gold and electroless nickel, they ensure robust conductivity. Meeting military specifications, these connectors are ideal for aerospace, defense, and industrial applications requiring secure and efficient electrical connections.