MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, sealed for environmental protection with a wide 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, they offer versatility in harsh environment applications. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells, they come in a range of plating options, including cadmium-free finishes for RoHS compliance. Suitable for military-specification requirements, these connectors ensure reliable performance in demanding conditions.