MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With a wide operating temperature range of -65 °C to 200 °C, they provide reliable performance in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for efficient connections. Constructed with high-strength aluminum shells and various plating options like gold and electroless nickel, they ensure durability and conductivity. These RoHS-compliant connectors are ideal for military and industrial applications requiring rugged and reliable connectivity.