Fractional Sizes of USS Washers with Plain Finish
Low Carbon USS Flat Washers for General-Purpose Fastening
Low carbon USS (United States Standard) flat washers are fundamental fastening components designed to distribute load evenly across bolted connections. By spreading pressure over a wider surface area, these washers help prevent surface damage, reduce pull-through, and improve overall joint stability. Manufactured from low-carbon steel, USS flat washers offer an excellent balance of flexibility, strength, and affordability—making them a trusted choice for industrial, construction, and maintenance applications.
What Are Low Carbon USS Flat Washers?
United States Standard Dimensions
Low carbon USS flat washers are produced to USS dimensional standards, which feature a larger outer diameter compared to SAE washers. This wider bearing surface provides enhanced load distribution, especially when fastening into softer materials or oversized holes.
Low Carbon Steel Construction
Made from mild, low-carbon steel, these washers are more malleable than high-carbon alternatives. This flexibility allows the washer to conform slightly under load without cracking, helping protect mating surfaces while maintaining secure clamping force.
Fractional Sizes for Broad Compatibility
Common Fractional Options
Low carbon USS flat washers are available in a full range of fractional sizes, including 1/4", 3/8", 1/2", 5/8", 3/4", and 1". Each size is designed to match standard bolt and nut dimensions, ensuring proper fit and consistent performance.
Reliable Load Distribution
The larger USS outside diameter improves holding power and minimizes surface deformation, making these washers ideal for general-purpose and light structural fastening.
Plain Finish for Cost-Effective Performance
Untreated, Economical Design
Plain finish low carbon USS flat washers are uncoated, offering a simple and budget-friendly solution for fastening applications. While they do not provide corrosion resistance, they perform exceptionally well in dry, indoor, or controlled environments.
Ideal for Non-Corrosive Settings
These washers are commonly selected where environmental exposure is minimal and cost efficiency is a priority.
Common Applications
Low carbon USS flat washers are widely used in construction framing, industrial equipment, automotive assemblies, agricultural machinery, and general maintenance work.
With dependable load distribution, flexible mild-steel construction, and economical plain finish, low carbon USS flat washers in fractional sizes provide a practical, reliable fastening solution for everyday applications across multiple industries.