Weld studs are threaded fasteners that take less time to install than fasteners that require drilling, tapping, punching, or screwing. The stud welding process permanently joins the studs to one side of a workpiece while leaving the other side unmarred. A weld stud loads into a compatible stud welding gun, and the gun is connected to a stud welder that supplies current to the stud. The current melts the base of the stud and an area of the workpiece to fuse them and create a weld. CD (capacitor discharge) weld studs require lower levels of heat and less time to weld than drawn arc weld studs, which makes them suitable for use on sheet metal and other thin materials that would be marred by the drawn arc welding process. Drawn arc weld studs form strong, vibration-resistant welds that provide a tight seal against water, oil, air, or gas leaks at the weld point.