The MIL-DTL-38999 Series II connectors offer robust performance in harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. The connectors come in aluminum shells with options for different plating finishes, including RoHS certified cadmium-free coatings. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity. With EMI/RFI shielding and durable construction, these connectors meet military specification standards for ruggedness and performance, making them suitable for aerospace, defense, and industrial applications.