The MIL-DTL-38999 Series II connectors offer robust performance in harsh environments, with up to 128 contacts sealed within an insert. Designed for reliable operation in extreme conditions, they boast an impressive operating temperature range of -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors cater to diverse installation needs. Available in nine shell sizes and 52 insert arrangements, they accommodate M39029 rear release crimp contacts in multiple sizes. Crafted from durable aluminum and plated with options like electroless nickel and cadmium finishes, these connectors ensure both strength and corrosion resistance. Meeting stringent military specifications, they are ideal for applications requiring secure and high-performance electrical connections in demanding environments.