Also known as countersunk, flat head screws have a tapered underside that lies flush with the material it truly is pushed into. Flat head screws need a countersunk hole Unless of course the fabric is rather soft. Probably the most typical types of screwdrivers and likely 1 you are quite https://zionghfdh.blog-a-story.com/9439853/the-definitive-guide-to-types-of-screw-heads-for-screwdrivers