MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for versatile connectivity. With an operating temperature range from -65 °C to 200 °C, they ensure reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors offer flexibility for different applications. The connectors come in aluminum shells with options for plating finishes such as gold, electroless nickel, and black anodized aluminum, meeting RoHS compliance standards for environmentally conscious practices. Ideal for military and industrial use, the MIL-DTL-38999 II connectors guarantee durability and longevity, with a service rating of I and a mating life of 500 cycles. Whether for front or rear wall mount, jam nut, or cable clamp installations, these circular connectors provide secure and efficient electrical connections, making them essential components for critical operations.