MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65 °C to 200 °C. This connector family includes front and rear wall mount as well as jam nut receptacles, with RFI grounding plugs available. With 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes, including coax and twinax options. Constructed with high-strength aluminum shells, these connectors come in a range of plating options such as cadmium-free finishes. Meeting MIL-DTL-38999 I military specifications, they are ideal for harsh environments, ensuring reliable connectivity in demanding applications.