MIL-DTL-38999 Series II connectors feature up to 128 contacts, boasting environmental sealing and a wide operating temperature range of -65 °C to 200 °C. These harsh environment thin-walled connectors offer various mounting styles – front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering plating options including light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, these connectors cater to diverse needs. With RoHS certified cadmium-free finishes, they ensure compliance with environmental regulations, making them a reliable choice for various applications in the military and beyond.