The MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an environmentally sealed insert, designed for extreme operating conditions ranging from -65°C to 200°C. Available in various mounting options including front wall, rear wall, and jam nut receptacles, they offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, these connectors ensure secure and reliable connections. Constructed with high-strength aluminum shells and offered in a range of plating options, they meet stringent military specifications for durability. RoHS compliant finishes are also available for environmentally conscious applications. Ideal for harsh environments, these connectors provide conductivity and ingress protection, making them suitable for a wide range of industrial and military applications.