MIL-DTL-38999 Series I connectors offer robust performance in harsh environments, featuring up to 128 contacts within an insert. These circular connectors are designed for military specifications, with options for front wall mount, rear wall mount, and jam nut receptacles. With a wide operating temperature range of -65°C to 200°C, they ensure reliable connectivity in extreme conditions. Utilizing M39029 rear release crimp contacts, available in various sizes, these connectors guarantee secure connections. Constructed with high-strength aluminum shells and offered in different plating options, including cadmium-free finishes, they provide durability and corrosion resistance. Suitable for applications requiring environmental sealing, these connectors are ideal for demanding military and aerospace environments.