MIL-DTL-38999 Series I connectors feature up to 128 contacts, offering robust 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, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, 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 multiple plating options such as cadmium and nickel, ensuring durability in harsh environments. RoHS compliant finishes are also available. Perfect for military and industrial applications, these connectors provide reliable performance with a service rating of E and a mating life of 500 cycles.