MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, with an operating temperature range of -65°C to 200°C. Designed for harsh environments, this connector family offers front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, these connectors come with a choice of plating options, including cadmium-free finishes. Designed to meet military specifications, they provide reliable performance in demanding applications.