MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various shell sizes and insert arrangements, they offer reliable connectivity with M39029 rear release crimp contacts. These connectors come in high-strength aluminum shells and offer multiple plating options, including cadmium-free finishes. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they are versatile for different applications. The bayonet coupling design ensures secure mating, while the electroless nickel coating provides durability. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 I specifications and offer reliable performance in demanding environments.