MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility in installation. Featuring aluminum shells with options for plating including cadmium and nickel, they ensure durability and reliability. Utilizing M39029 rear release crimp contacts, they provide secure connections with gold plating for optimal conductivity. With a bayonet coupling mechanism and RoHS compliant options, these connectors meet stringent military specifications for performance and safety in demanding applications.