MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in varied conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse application needs. The connectors come in aluminum shells with multiple plating options, ensuring durability and corrosion resistance. Utilizing M39029 rear release crimp contacts, they offer secure connectivity, with options for RoHS compliant finishes. Suitable for military and industrial applications, these connectors are ideal for demanding environments where rugged performance is essential.