MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65°C and 200°C, they offer reliability in extreme conditions. Available in various mounting options such as front wall, rear wall, jam nut, and box mount receptacles, these connectors ensure versatile installation. With options like straight, RFI grounding, and standard plugs, they cater to diverse connectivity needs. The aluminum shells come in different plating choices including cadmium-free finishes, meeting RoHS standards. Utilizing M39029 rear release crimp contacts, they ensure secure and efficient connections. Suitable for military and industrial applications, these connectors guarantee durability and performance in demanding settings.