MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in nine shell sizes and 52 insert arrangements, they accommodate M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options such as gold, electroless nickel, and cadmium-free finishes, these connectors ensure reliable performance in temperatures ranging from -65 °C to 200 °C. Meeting MIL-DTL-38999 II specifications, they are ideal for military and aerospace applications requiring durability and EMI/RFI shielding.