MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. This connector family includes front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, catering to various installation needs. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 for optimal connectivity. Constructed with high-strength aluminum shells, these connectors come in multiple plating options, such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, offering versatility in different applications. The RoHS-compliant cadmium-free finishes ensure environmental compliance, making them suitable for a wide range of industries.