MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts sealed for protection. Operating smoothly in temperatures ranging from -65 °C to 200 °C, they offer reliable performance. Featuring various mounting options such as front and rear wall mounts, jam nuts, and box mounts, these connectors cater to diverse needs. Available in nine shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts. The connectors, made of aluminum, come with plating choices like cadmium and electroless nickel. With RoHS certified options, they ensure compliance with environmental regulations. Trusted for their durability, these connectors are ideal for demanding applications.