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. Available in various styles including front and rear wall mounts, jam nut receptacles, and RFI grounding plugs, they offer versatility in connectivity. With 9 shell sizes and 52 insert arrangements utilizing M39029 rear release crimp contacts, these connectors ensure reliable performance. Constructed with high-strength aluminum shells and offered with different plating options such as cadmium and nickel, they meet stringent military specifications. RoHS compliant finishes are also available. Suitable for applications requiring durability and conductivity, these connectors provide a secure and efficient solution for demanding environments.