MIL-DTL-38999 Series I connectors offer reliable performance in harsh environments with up to 128 contacts in an insert. These environmentally sealed connectors feature a wide operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high strength aluminum shells come with multiple plating options, including cadmium-free finishes for RoHS compliance. With front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, these connectors are ideal for military and industrial applications requiring durability and conductivity.