MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they boast an impressive operating temperature range of -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, these connectors feature RFI grounding plugs for enhanced functionality. With 52 insert arrangements and M39029 rear release crimp contacts, they provide versatility in applications. Constructed with high-strength aluminum shells and offering multiple plating options, such as gold, electroless nickel, and cadmium-free finishes, these connectors ensure reliable performance. RoHS compliant and with a service rating of I, they are ideal for demanding military and industrial applications.