MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts securely housed in an insert. Built for durability, these connectors are environmentally sealed and can withstand temperatures ranging from -65 °C to 200 °C. Available in various configurations, including front and rear wall mount options, as well as jam nut receptacles, they ensure reliable connections in demanding applications. The connectors comply with military specification MIL-DTL-38999 I and come in a range of shell sizes and contact arrangements, utilizing M39029 rear release crimp contacts. Crafted from high-strength aluminum with multiple plating options, such as electroless nickel and cadmium-free finishes, they offer versatility and corrosion resistance. With features like bayonet coupling and removable crimp contacts, these connectors provide ease of use and maintenance. Suitable for a wide range of industries, from aerospace to telecommunications, they guarantee robust performance with 500 mating cycles and conductive socket contacts. Meeting stringent quality standards, including RoHS compliance, they are the ideal choice for applications requiring rugged and reliable circular connectors.