A: Hello, There are a couple of options based on project preference. You may use 5/16” diameter anchor bolts on the four outside corner holes and/or the middle hole with a 5/8" anchor bolt. To protect your deck, we recommend you also use blocking underneath if not attaching to/through the joist. If you need more information you may visit www.ozcobp.com and inquire. Thank you for your inquiry!
A: Hello, Since you are installing into concrete you may use a (5/8" x length you need for your surface, average is usually around 4" inches) concrete wedge anchor in the middle hole of the post base plate. You may add additional 5/16" concrete screws/anchors to the outside 4 corners as well. You could also use a 1/2" concrete wedge anchor as well. Please let us know if you need anything else. Thank you for your inquiry! https://www.youtube.com/watch?v=whCUSIKK9ds
A: For common 6x6 posts, the answer is yes.
A: 5/8" is the correct anchor to use.