MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. These connectors, available in a variety of shell sizes and insert arrangements, offer front and rear wall mount options as well as jam nut receptacles, all with RFI grounding plugs. Constructed with high-strength aluminum shells and various plating options including cadmium-free finishes, they ensure reliable performance in demanding applications. Utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, these connectors are ideal for military and aerospace use, meeting MIL-DTL-38999 I specifications for quality and durability.