MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts housed in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options such as front wall, rear wall, and jam nut receptacles, along with RFI grounding plugs. With a wide operating temperature range of -65 °C to 200 °C, they ensure reliability in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, these connectors guarantee durability and performance. Suitable for demanding applications, they are ideal for military and aerospace use.