The Series 5651 Cross Male NPT x Male NPT x Male NPT x Female NPT adapters are durable carbon steel fittings designed for secure and efficient fluid routing in hydraulic and fluid power systems. These cross adapters feature three male NPT (National Pipe Tapered) connections and one female NPT connection, arranged in a cross shape, allowing fluid to be routed to multiple components. The male NPT connections use tapered threads that create a metal-to-metal seal, ensuring a reliable, leak-proof connection, while the female NPT connection also utilizes tapered threads for a secure seal. Made from carbon steel, these adapters offer exceptional strength and resistance to corrosion, making them ideal for high-pressure industrial applications. The Series 5651 adapters provide a flexible, long-lasting solution for fluid transfer, ensuring efficient and dependable fluid routing in demanding environments.