The MIL-DTL-38999 Series I connectors offer robust performance in harsh environments, featuring up to 128 contacts housed in a durable insert. With a wide operating temperature range of -65°C to 200°C, these connectors are well-suited for demanding applications. Available in various shell sizes and insert arrangements, they come in high strength aluminum shells with options for different plating finishes, including RoHS certified cadmium-free coatings. Designed for military specifications, these circular receptacles ensure reliable connectivity, with options for wall mounting and bayonet coupling. The use of M39029 rear release crimp contacts guarantees secure connections, while the RFI grounding plugs provide added protection. Suitable for both military and industrial use, these connectors are essential for maintaining signal integrity in challenging environments.