I recently built a pair of custom shelves for a closet remodel. Ideally, I would like to float these shelves by securing them to some studs.
Shelving dimensions are 72"x32"x16". The shelving roughly weighs 100lbs and built with 3/4" birch plywood. The shelves would only carry the weight of common items found in your home closet so nothing too heavy. I have added 4" mounting points underneath each shelf fastened in place with 6 pocket holes.
I was thinking of using lag screws to secure them to the studs. Would this be overkill or would some finely threaded 3 1/2 inch wood screws work? Thank you in advance!
I took the advice in the accepted answer and went with RSS Rugged Structural Screws. The only ones I could find at my local hardware store were 5/16x4" RSS which may be overkill for this project but the cabinets are securely attached to studs. I think in retrospect I would go with a smaller construction screw with a french cleat system for easier installation and to make the install more aesthetically pleasing.