MIL-DTL-38999 Series II connectors boast robust construction with up to 128 contacts in an insert, designed for harsh environments. Featuring various mounting options like front and rear wall mount, as well as jam nut and box mount receptacles, they offer versatility in installation. These connectors, with a wide operating temperature range of -65 °C to 200 °C, ensure reliable performance in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with durable aluminum shells and offering multiple plating options including cadmium-free finishes, they meet stringent military specifications for conductivity and ingress protection. Perfect for applications requiring high reliability, these connectors are ideal for aerospace, defense, and industrial use.