Hex washer heads are just about the same as hex head screws. The one distinction is that a washer is highlighted on the hex washer head. You can find various combos; nevertheless, the most common would be the flathead and Phillips head combinations. The one thing to listen to is https://raymondlmjhe.jts-blog.com/28777576/little-known-facts-about-types-of-screwdriver-heads