MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in a sealed insert, designed for extreme environments. Operating between -65°C and 200°C, these connectors are ideal for demanding applications. Featuring front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, they provide versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts in various sizes, including coax and twinax, they offer flexibility for different needs. Constructed with high-strength aluminum shells and available in different plating options, such as gold and electroless nickel, they ensure reliable performance. RoHS compliant finishes are also available. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 I specifications, making them a dependable choice for critical operations.