MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors are reliable in extreme conditions. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse applications. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options including electroless nickel and cadmium finishes, they ensure durability and performance. With a straight plug configuration and gold-plated removable crimp contacts, these connectors guarantee efficient signal transmission. Meeting MIL-DTL-38999 II military specifications, they are ideal for demanding environments where reliability is paramount.