MIL-DTL-38999 Series I connectors offer up to 128 contacts in an environmentally sealed insert, designed for rugged applications with an operating temperature range of -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors are versatile for various installations. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connectivity in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and available in different plating options, including cadmium-free finishes, they meet RoHS compliance standards. Ideal for military and industrial use, these connectors are known for their durability and performance in harsh environments.