A Straight Rigid Male Metric x Male JIC Hydraulic Adapter is a fitting used to connect two hydraulic lines with different thread types, specifically a metric thread and a JIC (Joint Industry Council) thread. The metric side, commonly used in European systems, is measured in millimeters (e.g., M22x1.5, where "M" stands for the metric thread, "22" is the outer diameter in millimeters, and "1.5" is the thread pitch). On the other end, the adapter features a JIC male connection with a 37-degree flare, ensuring a leak-proof seal when the male threads meet the female coned seat. This type of connection is used in fluid power systems, and it typically includes a fitting, flare nut, and sleeve to complete the assembly. The connection is mechanically secure, providing a reliable, high-pressure seal for hydraulic systems.