The MIL-DTL-38999 Series I connectors offer robust connectivity solutions with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, they come in plated options such as cadmium and nickel. With a wide operating temperature range from -65°C to 200°C, these connectors are ideal for demanding applications requiring reliable performance.