SUS304 스프링 와셔 M4/M6/M8/M10/M12 split in these washers gives them some springiness when you squeeze them down. This spring action helps keep everything clamped together, so your screws and bolts don't come loose from rattling or shifting. They come in different sizes (M4, M6, M8, M10, M12) to fit many kinds of screws and bolts, so you can use them for all sorts of jobs.
SUS304 Spring Washer M4/M6/M8/M10/M12 add extra pressure to keep screws and bolts where they should be. This makes your solar panel system stay put and work without problems. People often use them with bolts, screws, or nuts to keep things extra secure, mostly where there's a lot of shaking.