MIL-DTL-38999 Series I connectors offer exceptional performance in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating range of -65 °C to 200 °C, these connectors are highly versatile. Available in various mounting options including front wall mount, rear wall mount, and jam nut receptacles, they cater to diverse applications. The connectors comply with military specification MIL-DTL-38999 I and come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with high-strength aluminum shells and offering multiple plating options such as electroless nickel and cadmium finishes, they ensure durability and reliability. With RoHS certified cadmium-free variants available, these connectors meet stringent environmental standards. Suitable for demanding environments, the MIL-DTL-38999 Series I connectors are ideal for aerospace, defense, and industrial applications.