MIL-DTL-38999 Series II connectors feature up to 128 contacts within an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. These thin-walled, restricted length connectors offer 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 utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Crafted from aluminum, these connectors come with plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, meeting RoHS compliance standards. Perfect for military applications, the Series II connectors ensure reliable performance with their gold-plated contacts and durable construction.