MIL-DTL-38999 Series II connectors offer high performance with up to 128 contacts in an environmentally sealed insert. Operating in extreme temperatures from -65 °C to 200 °C, these connectors are designed for harsh environments. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and offering multiple plating options including cadmium-free finishes, these connectors ensure durability and compliance with RoHS regulations. Perfect for military and industrial applications, they guarantee secure and efficient electrical connectivity.