Now bore another pilot hole and counterbore for your second screw through the bracket above the horizontal leg (it will be hidden by the box). Drive a second 3-inch decking screw into your bracket.

Step drill bits offer the advantage of fast, ... Counterbore. Counterbore drill bits create holes that allow the head of a ...

Time-Sert thread repair kits utilize a solid, threaded sleeve insert. The kit comes with every tool you need including a drill bit, a counterbore, a tap, an insert driver, and five inserts.