MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an environmentally sealed insert. Designed for harsh environments, these connectors have a wide operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer flexibility for different applications. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatile connectivity solutions. Utilizing M39029 rear release crimp contacts, including sizes 22D, 22M, 22, 20, 16, and 8 for coax and twinax, these connectors ensure reliable performance. Constructed with high-strength aluminum shells and offering multiple plating options such as cadmium and nickel, they meet stringent military specifications. RoHS compliant finishes are also available, catering to environmental regulations. Ideal for demanding environments, the MIL-DTL-38999 Series I connectors are a rugged and dependable choice for critical applications.