MIL-DTL-38999 Series I 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. Available in various configurations including front and rear wall mount receptacles, and jam nut receptacles, they offer RFI grounding plugs for optimal performance. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, accommodating a wide range of applications. Constructed with high-strength aluminum shells and offering multiple plating options such as cadmium and nickel, they ensure durability and reliability. Meeting MIL-DTL-38999 I specifications, these connectors are RoHS compliant, making them suitable for diverse military and industrial applications.