MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts within an insert for robust connectivity. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they offer flexibility and compatibility. The connectors come in high-strength aluminum shells with options for different plating finishes, including cadmium-free choices for RoHS compliance. Offering front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they cater to diverse mounting needs. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable connections. Suitable for military and industrial use, they provide excellent conductivity and environmental resistance, making them a dependable choice for critical operations.