MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high strength aluminum shells come in a range of plating options, including cadmium-free finishes. This connector family includes front and rear wall mount as well as jam nut receptacles, all with RFI grounding plugs for enhanced performance. Suitable for military and industrial applications, these connectors are RoHS compliant and offer longevity with a mating life of 500 cycles.