MIL-DTL-38999 Series II connectors are designed for rugged environments, boasting up to 128 contacts within a sealed insert. With an impressive operating temperature range from -65°C to 200°C, these connectors ensure reliable performance in extreme conditions. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Crafted from aluminum with plating options including cadmium-free finishes, they meet RoHS compliance standards. Perfect for military and industrial applications, these connectors guarantee durability and conductivity, with a service rating of M for environmental resistance.