MIL-DTL-38999 Series II connectors are rugged and reliable, designed for harsh environments with up to 128 contacts. These connectors feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. With an operating temperature range from -65 °C to 200 °C, they are suitable for a wide range of applications. Made of durable aluminum with plating options such as gold, electroless nickel, and cadmium finishes, they ensure long-lasting performance. Meeting military specification MIL-DTL-38999 II, these connectors offer superior conductivity and environmental resistance, making them ideal for demanding situations.