Keylocking Studs Installation / Removal

1) Drill with a standard tap drill and countersink with a standard 82° - 100° countersink.

2) Tap new threads with a standard tap.

3) Screw in the stud end until it is .010-.030 below the surface. Keys locate the proper depth.

4) Drive keys down with several hammer taps on the proper installation tool.

Removal of Keylocking Studs

If necessary, Acme keylocking studs can be removed without damage to the parent material:

1. Cut the stud to be flush with the parent material
2. Drill out material between the keys with a standard drill (drill bushing required) to specified depth
3. Bend the keys inward and break off
4. Remove the old stud using a screw extractor or similar device.
5. Install a replacement stud into the original tapped hole and drive keys down.