MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65°C to 200°C, these connectors are versatile and reliable. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they cater to various installation needs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offering a range of plating options including cadmium-free finishes, these connectors ensure durability and performance. MIL-DTL-38999 Series I connectors are ideal for military and industrial applications requiring secure and efficient electrical connections in demanding settings.