The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65°C and 200°C, these connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles. Available in aluminum shells with multiple plating options, they offer reliable performance with RoHS certified cadmium-free finishes. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections in critical applications. Suitable for military and industrial use, they provide durability and conductivity, meeting stringent standards for environmental resistance.