MIL-DTL-38999 Series I connectors offer robust performance in harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed, with an operating temperature range of -65°C to 200°C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. The connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. Offering front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they cater to diverse connectivity needs. Ideal for military and industrial applications, these connectors ensure reliable performance with 500 mating cycles and conductive contact style. RoHS compliant options are also available, making them suitable for environmentally conscious projects.