MIL-DTL-38999 Series I connectors offer reliable performance in harsh environments with up to 128 contacts housed in an insert. Designed for durability, they feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With a wide operating temperature range from -65 °C to 200 °C, these connectors are suitable for various applications. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells, they come in different plating options, including cadmium-free finishes for RoHS compliance. These connectors, meeting military specification MIL-DTL-38999 I, are ideal for demanding environments requiring reliable electrical connections.