MIL-DTL-38999 Series I connectors offer a rugged solution for harsh environments, featuring up to 128 contacts sealed for environmental protection. With an operating temperature range spanning from -65 °C to 200 °C, these connectors ensure reliable performance in extreme conditions. Available in various mounting options such as front wall, rear wall, and jam nut receptacles, they accommodate diverse installation needs. The connector family, compliant with military specification MIL-DTL-38999 I, boasts 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells, these connectors are offered in multiple plating options, including cadmium-free finishes for RoHS compliance. Suitable for applications requiring durability and conductivity, they are ideal for use in aerospace, defense, and industrial sectors.