Choose the Right Washer for Your Needs: SAE vs. USS We offer two types of standard washers designed for different applications: SAE Narrow Washers : These washers are thinner and have a smaller outer diameter. They are ideal for precision applications, such as automotive and machinery assembly, where space is limited and a snug fit is required. SAE washers provide reliable load distribution in tighter spaces. USS Wide Washers : These are thicker and broader, designed for heavy-duty use. They are commonly used in construction, structural projects, and industrial equipment where larger bearing surfaces and higher load capacity are needed. USS washers help prevent fasteners from sinking into soft materials or spreading pressure over a wider area. Choose SAE for precision and confined spaces, and USS for strength and durability in demanding environments.