MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range from -65°C to 200°C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they offer flexibility for different connectivity needs. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS certified finishes, they ensure durability and reliability. The connector family includes front and rear wall mount receptacles and jam nut receptacles, as well as RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they provide secure connections. These connectors, meeting MIL-DTL-38999 I specifications, are suitable for military and industrial use, with a service rating of E for environment resistance.