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. This harsh environment connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, these connectors come with plating options such as cadmium and nickel, ensuring durability. RoHS certified finishes are also available. The MS27467 connectors, known for their straight plug, bayonet coupling design, cater to military specifications, making them ideal for demanding applications.