MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. This connector family includes front and rear wall mount options, jam nut receptacles, and RFI grounding plugs, meeting military specification MIL-DTL-38999 I. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. Constructed with high strength aluminum shells, these connectors offer various plating options such as cadmium and nickel, with RoHS compliant finishes. Perfect for applications requiring durability and performance, these connectors are ideal for use in a wide range of industries.