MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts housed in a sealed insert. Designed for harsh environments, they boast a wide operating temperature range from -65 °C to 200 °C. Featuring front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, these connectors are versatile for various applications. With 9 shell sizes and 52 insert arrangements available, they accommodate M39029 rear release crimp contacts in multiple sizes. Constructed with high-strength aluminum shells, they come with various plating options, including cadmium-free finishes for RoHS compliance. Ideal for military and industrial use, these connectors ensure reliable performance in demanding conditions.