MIL-DTL-38999 Series II connectors offer exceptional performance in harsh environments, with up to 128 contacts in a secure insert. These connectors, featuring various mounting options like front and rear wall mounts, jam nuts, and box mounts, are designed for durability. With a wide operating temperature range of -65 °C to 200 °C, they ensure reliability in extreme conditions. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating different needs. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. Made of rugged aluminum, with plating options including gold and electroless nickel, they are built to last. RoHS compliant finishes are available, meeting environmental standards. Suitable for military and industrial applications, these connectors provide high performance and longevity.