The MIL-DTL-38999 Series II connectors offer robust connectivity solutions for harsh environments, featuring up to 128 contacts in a sealed insert. Operating between -65°C and 200°C, these connectors come in various styles such as front and rear wall mount, jam nut, and box mount receptacles. With options for straight, RFI grounding, and standard plugs, they accommodate diverse applications. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable connectivity in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering plating choices like electroless nickel and cadmium finishes, they meet stringent performance standards. The Series II connectors, known for their durability and EMI/RFI shielding capabilities, are crucial components in military, aerospace, and industrial settings.