When hardware is countersunk, a hole is drilled into the wood so that when a screw or bolt is inserted, it sits flush with or below the surface of your furniture. This extra step is invaluable to both its aesthetic and safety. Countersunk hardware ensures that unattractive bolts and screws are not sticking up out of the wood. Plus, with no sharp metal protruding from your furniture, there is nothing for clothes to get snagged on or little hands to get scratched by.