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.
| Acme Part No. | Stud End Thread Size Class 2A (Mod Minor Dia.) | Tap Drill Size 0.003 -0.001 | Tap Drill Hole Tolerance | C'Sink Dia. +.010 -.000 | Removal Drill Size | Removal Drill Depth | Quote Request | |
|---|---|---|---|---|---|---|---|---|
| 220-072890 | 5/16-18 | .272 | .004/-.001 | .323 | 7/32 | 1/8 | ||
| 220-072891 | 3/8-16 | .332 | .004/-.001 | .385 | 9/32 | 1/8 | ||
| 220-072893 | 7/16-14 | .397 | .004/-.001 | .447 | 11/32 | 3/16 | ||
| 220-072895 | 1/2-13 | .453 | .004/-.001 | .510 | 13/32 | 3/16 | ||
| 220-072897 | 9/16-12 | .516 | .005/-.001 | .572 | 15/32 | 3/16 | ||
| 220-072899 | 5/8-11 | .578 | .005/-.001 | .635 | 17/32 | 3/16 | ||
| 220-072901 | 11/16-11 | .641 | .005/-.001 | .700 | 19/32 | 3/16 | ||
| 220-072903 | 13/16-16 | .766 | .005/-.001 | .822 | 23/32 | 3/16 | ||
| 220-072905 | 7/8-14 | .828 | .005/-.001 | .885 | 25/32 | 3/16 | ||
| 220-072907 | 1-1/8-12 | 1.062 | .005/-.001 | 1.145 | 31/32 | 5/16 | ||
| 220-072909 | 1-1/4-12 | 1.187 | .005/-.001 | 1.270 | 1-3/32 | 5/16 | ||
| 220-072911 | 1-3/8-12 | 1.312 | .005/-.001 | 1.395 | 1-7/32 | 5/16 | ||
| 220-072868 | 5/16-18 | .272 | .004/-.001 | .323 | 7/32 | 5/32 | ||
| 220-072870 | 3/8-16 | .332 | .004/-.001 | .385 | 9/32 | 3/16 | ||
| 220-072872 | 7/16-14 | .397 | .004/-.001 | .447 | 11/32 | 3/16 | ||
| 220-072874 | 1/2-13 | .453 | .004/-.001 | .510 | 13/32 | 3/16 | ||
| 220-072876 | 9/16-12 | .516 | .005/-.001 | .572 | 15/32 | 3/16 | ||
| 220-072878 | 5/8-11 | .578 | .005/-.001 | .635 | 17/32 | 3/16 |
