The MIL-DTL-38999 Series I connectors are designed for harsh environments, with up to 128 contacts in an environmentally sealed insert. Operating between -65 °C and 200 °C, they offer durability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Constructed with high strength aluminum shells and offering multiple plating options, including RoHS certified finishes, they cater to diverse application needs. With a bayonet coupling design and gold-plated contacts, they guarantee reliable performance in military and industrial settings.