MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65 °C to 200 °C. This connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, catering to various installation needs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 for reliable connections. Constructed with high-strength aluminum shells, these connectors come with different plating options, including cadmium-free finishes, ensuring compliance with RoHS regulations. Suitable for harsh environments, they are designed for military applications, meeting MIL-DTL-38999 I specifications.