AHDM06-18-21SN is a DuraMate™ AHDM Series metal circular connector designed for environmentally-sealed, multi-pin applications in harsh-environment, off-road industrial settings. The connector features a shell size 24 configuration with 21-position capacity and integrates wide thread coupling for secure mating. It accommodates multiple contact sizes (Size 12 at 25A and Size 16 at 13A) with a rated voltage of 250V, providing reliable electrical connectivity across demanding applications. The metal construction with integrated wide threading and reduced diameter rear seal ensures durability and environmental protection, making it ideal for agricultural equipment, industrial machinery, and other heavy-duty outdoor applications requiring robust, sealed connections.