MIL-DTL-38999 Series I connectors offer up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options including front and rear wall mount and jam nut receptacles, they feature RFI grounding plugs and utilize M39029 rear release crimp contacts. With 9 shell sizes and 52 insert arrangements, these connectors are versatile and reliable. Constructed with high strength aluminum shells and plated in options such as electroless nickel, they meet stringent military specifications for durability. Suitable for applications requiring RoHS compliant finishes, these connectors are ideal for demanding environments.