MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an environmentally sealed insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance in harsh conditions. Available in various mount types including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they meet stringent military specifications for durability. Suitable for applications requiring EMI/RFI shielding, these connectors provide reliable connectivity in demanding settings.