MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut receptacles, and RFI grounding plugs, these connectors offer versatility in connectivity solutions. With 52 insert arrangements using M39029 rear release crimp contacts, they ensure reliable performance in demanding applications. Constructed with high-strength aluminum shells and offering multiple plating options such as cadmium and nickel, they meet stringent military specifications for durability. RoHS certified finishes are also available, making them suitable for a range of environmental requirements.