MIL-DTL-38999 Series I connectors feature up to 128 contacts in an 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, as well as jam nut receptacles, they offer RFI grounding plugs for enhanced performance. Compliant with military specifications, these connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells, they come with multiple plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum. RoHS certified cadmium-free finishes are also available, ensuring environmental compliance. With a service rating of I and a mating type of bayonet, these connectors are reliable for various applications requiring durability and conductivity in challenging settings.