The MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments, featuring up to 128 contacts sealed for environmental protection. With a wide operating temperature range from -65 °C to 200 °C, these connectors are suitable for demanding applications. 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 a choice of plating options, including cadmium-free finishes for RoHS compliance. Offering front and rear wall mount options, as well as jam nut receptacles, these connectors are designed for versatility. Their bayonet coupling mechanism ensures quick and easy mating, while the gold contact plating ensures optimal conductivity. Designed to meet MIL-DTL-38999 I military specifications, these connectors provide a reliable solution for critical electrical connections in aerospace, defense, and other industries.