The MIL-DTL-38999 Series II connectors are designed for demanding environments, offering up to 128 contacts in a durable insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for a variety of applications. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and plated with options like electroless nickel and cadmium finishes, they ensure durability and corrosion resistance. With RoHS compliant options, these connectors are ideal for military and industrial use.