MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in a durable, environmentally sealed design. Operating seamlessly in harsh environments, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements, they accommodate various connection needs, utilizing M39029 rear release crimp contacts. Crafted from high-strength aluminum, they come in a range of plating options, including cadmium-free finishes for RoHS compliance. Perfect for military and industrial applications, these connectors ensure reliable performance with a wide operating temperature range of -65 °C to 200 °C.