The Series 9043M Straight Female Metric x Female Metric Coupling adapters in carbon steel are fittings designed to connect two metric-threaded components. Metric threads, commonly used in Europe, are defined by the outer diameter (OD) and thread pitch, both measured in millimeters. For example, a callout like M22x1.5 indicates a metric adapter with a 22mm outer diameter and a 1.5mm thread pitch. These adapters feature female metric threads on both ends, making them ideal for securely connecting components in fluid and gas systems with metric threads. Made from durable carbon steel, these adapters offer strength, corrosion resistance, and reliable performance in a variety of industrial applications.