MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in a rugged insert design. These environmentally sealed connectors are built to withstand extreme temperatures ranging from -65°C to 200°C, making them ideal for harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatile installation options. With 52 insert arrangements and M39029 rear release crimp contacts in various sizes, including coax and twinax, these connectors offer flexibility for different applications. Constructed with high-strength aluminum shells and available in multiple plating options, such as cadmium-free finishes, they ensure reliable performance and durability. Suitable for military and industrial use, MIL-DTL-38999 Series I connectors meet stringent quality standards and are RoHS compliant.