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 of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells and offered in different plating options, including RoHS-certified finishes, these connectors ensure reliable performance. The range includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, meeting military specification MIL-DTL-38999 I. Suitable for wall and jam nut mounting, with a bayonet coupling, these connectors are essential for environments requiring durability and conductivity.