There's two different types of hex screws: An Allen screw has a hexagonal indent in The pinnacle, demanding an Allen wrench, and the opposite variety has no indent while in the hexagonal head and has to be applied or removed with a socket wrench. Wood screws Use a threaded shaft. https://paxtonybbbz.activosblog.com/28127135/the-single-best-strategy-to-use-for-screws