MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With nine shell sizes and 52 insert arrangements available, they accommodate various contact configurations, including M39029 rear release crimp contacts. Constructed with durable aluminum shells and offered in a range of plating options, such as cadmium-free finishes, these connectors ensure reliable operation in extreme conditions. From military to industrial applications, the MIL-DTL-38999 I series provides secure and efficient electrical connections, meeting stringent performance standards.