MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. 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 for different connectivity needs. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS certified finishes, they ensure durability and reliability. The connectors come in different mounting configurations such as front wall mount, rear wall mount, and jam nut receptacles, with RFI grounding plugs for added functionality. Utilizing M39029 rear release crimp contacts, they provide secure and efficient connections. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 I specifications and are designed for rugged performance in challenging conditions.