MIL-DTL-38999 Series I connectors offer robust connectivity solutions with up to 128 contacts, designed for harsh environments with an impressive operating temperature range of -65 °C to 200 °C. Featuring front and rear wall mount options, as well as jam nut receptacles, these circular connectors ensure secure and reliable connections. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax, they provide versatility for different applications. Constructed with high-strength aluminum shells and available in a range of plating options, such as cadmium-free finishes, these connectors prioritize durability and performance. With RoHS compliance and a service rating of M, they guarantee quality and reliability in demanding environments.