MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature front and rear wall mount options, along with jam nut receptacles, ensuring secure installations. These connectors, compliant with military specification MIL-DTL-38999 I, are built for durability, with a wide operating temperature range from -65 °C to 200 °C. Available in nine shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. The high-strength aluminum shells come in various plating options, including cadmium-free finishes for RoHS compliance. Suitable for demanding applications, these connectors guarantee optimal performance with their conductivity and environmental resistance.