Manufactured from steel, zinc & clear passivated Provide a simple and effective way to join materials with the benefit of an internal thread Ideal for providing high quality, load bearing threads in various materials where alternative methods cannot maintain torque and pull out loads Ideally suited to applications where access is only available from one side of the workpiece May be set with Stock No. 487-151 and the tool contained in Threaded Insert Kit, Stock No. 623-5549