The MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they include front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors come in high strength aluminum shells with options for plating such as cadmium and nickel. Offering RoHS certified finishes, they are designed for demanding applications requiring reliability and durability in harsh environments.