MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With an operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. These connectors come in various styles, including front and rear wall mount, jam nut, and box mount receptacles. Available in aluminum shells with different plating options, they ensure durability and resistance to corrosion. Utilizing M39029 rear release crimp contacts, they provide secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Meeting military specifications, these connectors are suitable for demanding applications where reliability is paramount.