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. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors are versatile for harsh environments. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes, including coax and twinax options. Constructed with high-strength aluminum shells and offered in different plating options such as cadmium and nickel, these connectors meet diverse application needs. RoHS-certified finishes are also available for environmental compliance. Suitable for military and industrial applications, they ensure reliable connectivity with 500 mating cycles and conductive contact styles.