MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts within an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut receptacles, and RFI grounding plugs, they offer versatility for different applications. Compliant with military specification MIL-DTL-38999 I, these circular connectors come in high-strength aluminum shells with a range of plating options, from cadmium finishes to RoHS-certified alternatives. With M39029 rear release crimp contacts in multiple sizes, they ensure reliable connections in demanding conditions. Suitable for aerospace, defense, and industrial use, these connectors guarantee performance and durability in critical operations.