Keylocking Stud Installation Tool
Watch this video, then refer to the chart for the properly sized drill, tap and installation tool. Drill with a standard tap drill and countersink with a standard 82° – 100° countersink. Tap the new threads with a standard tap. Screw in the stud end until it is .010-.030 below the surface. Keys locate the proper depth. Drive keys down with several hammer taps on the proper installation tool.