The 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 plating options, including RoHS certified finishes, these connectors offer front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections in military and aerospace applications. With high strength aluminum shells and a bayonet mating type, they provide reliable performance in demanding conditions.