MIL-DTL-38999 Series II connectors are designed for harsh environments, offering reliable performance with up to 128 contacts in an insert. Built for durability, these connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options like front wall mount, rear wall mount, jam nut, and more, they provide flexibility for different applications. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Made with aluminum shells and offering multiple plating options, including RoHS-certified finishes, they ensure longevity and compliance with environmental regulations. Suitable for military and industrial use, these connectors are ideal for demanding scenarios where reliability is paramount.