I understand that my brushless cordless 20V (Dewalt) drill—because it has a hammer option— has what it takes to drill a 16 mm hole into concrete.
I also understand (from the same answer just linked) that I shouldn't just drill directly with 5/8". I have to first drill with maybe 4 mm, 8 mm, and 12 mm, before using the final bit.
I still have a few brief questions regarding drilling into concrete.
The drill bits sold in my area are imperial, not metric. Will a 16 mm anchor bolt give me a hard time when I hammer it into a 15.9 mm hole?
The bottom two feet of my garage wall (outside wall) look like concrete. I'm setting up a bike lock in it. After I install the lock, I'll tug with all I've got to confirm it's firm, but how do I confirm before starting that it's actually concrete?
Since the other side of the wall is outside the house and since this is away from light switches and any water pipes, I'm expecting there are no electricity and no water pipes. What is the likelihood I'll drill into water or electricity when it's a lower outside wall in a garage? Water pipes are never burried in a concrete wall; are they?