Countersunk Washers vs. Flat Washers – Which One Should You Choose?

You might be tempted to use a flat washer for every application—but that’s not always the best choice. If you’re working on a project where the fastener needs to sit flush with the surface, resist vibration, or protect soft materials, a countersunk washer is your best bet.

Flat washers are great for general use, especially with hex or pan head bolts. But for flush mounting, material protection, and aesthetic finishes, go with flush-fit countersunk washers. They offer not only improved performance but also a more polished and professional look. The choice between flat and countersunk isn’t just about shape—it’s about choosing the right tool for the job.