This tutorial demonstrates how to design and assemble a flange coupling using SolidWorks. It covers the creation of individual components such as the flanges, shaft, key, and bolts using basic SolidWorks features like extrude, revolve, and hole wizard. After modeling the parts, the tutorial explains how to assemble them using mates and assembly tools to ensure proper alignment and fit. This project helps users understand 3D mechanical part design and assembly workflow in SolidWorks.