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 options including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility in installation. With 52 insert arrangements utilizing M39029 rear release crimp contacts, they ensure reliable connectivity in military and aerospace applications. Constructed with aluminum shells and offering plating options such as electroless nickel and cadmium finishes, they meet stringent performance requirements. The connectors, compliant with RoHS regulations, are ideal for applications requiring durability and high performance in challenging environments.