MIL-DTL-38999 Series II connectors offer rugged performance with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options such as front wall, rear wall, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. With a wide range of plating options, including cadmium-free finishes, these connectors ensure reliable conductivity. Operating between -65°C and 200°C, they meet stringent military specifications for durability and performance. Perfect for applications requiring EMI/RFI shielding, these connectors are ideal for aerospace, defense, and industrial use.