MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65°C to 200°C, these connectors are highly durable. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. The connectors come in high strength aluminum shells with options for plating, including cadmium-free finishes. Offering front and rear wall mount, as well as jam nut receptacles, they are suitable for a wide range of applications requiring secure and efficient electrical connections.