MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an insert, designed for harsh environments. These circular plugs, featuring EMI shielding and bayonet coupling, meet military specification standards for rugged reliability. With a wide operating temperature range from -65°C to 200°C, they ensure consistent performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors utilize gold-plated removable crimp contacts for secure signal transmission. Constructed with aluminum shells and electroless nickel coating, they provide durability and corrosion resistance. Suitable for applications requiring environmental resistance, these connectors are ideal for military, aerospace, and industrial use.