USS Washers (Thru Hardened)

When your project demands washers that can take serious stress without bending or failing, USS washers that are thru-hardened are the go-to choice. These washers feature a slightly domed shape with a wider outer diameter to spread the load evenly, reducing wear on fastened surfaces and keeping joints tight under heavy pressure. Made from medium carbon steel that’s been thru-hardened for extra toughness, these washers are built to hold strong in construction, industrial machinery, and demanding equipment builds. Whether you’re securing structural steel, heavy machinery, or critical assemblies, these washers bring reliable strength and long-term durability to every job.

Get Superior-Quality Fasteners at Competitive Prices

Use the options below to find the fasteners you need in the quantities required for your application. Questions? Contact us today, and our team will gladly assist you in finding the best fastening solutions for your requirements. With South Coast Fasteners, you can count on helpful support, competitive pricing, and top-quality products for all your fastener requirements.

Types of USS Flat Washers (Thru Hardened) We Offer

USS Flat Washer (USA) Thru Hardened Plain

These thru hardened USS flat washers made in the USA are built for strength and reliability. The plain finish makes them best suited for indoor or protected applications where corrosion resistance is not a priority. Contractors use them in structural and heavy-duty connections where load distribution and durability are critical. Their domestic production ensures compliance with USA sourcing requirements.

USS Flat Washer Thru Hardened Plain (Import)

Import thru hardened plain washers provide the same durability and load distribution benefits as USA-made versions but at a more cost-effective price point. With no coating, they are intended for interior projects where moisture exposure is minimal. Contractors rely on them for structural and mechanical fastening where plain washers are sufficient. Their availability and affordability make them a practical option for many job sites.

USS Flat Washer (USA) Thru Hardened Zinc Cr+3

USA thru hardened washers with a zinc Cr+3 finish deliver both strength and corrosion resistance. The coating helps protect against rust while maintaining a clean, professional appearance. They are used in commercial and industrial projects where long-lasting performance is important. Builders choose them when a balance of durability, finish quality, and domestic sourcing is required.

USS Flat Washer (USA) Thru Hardened Zinc Yellow Cr+6

These USA-made thru hardened washers are finished with zinc yellow Cr+6 for superior corrosion resistance and a distinctive golden look. The coating provides better protection than clear zinc, extending the washer’s lifespan in demanding environments. Contractors use them in structural steel and commercial construction where durability and compliance with domestic sourcing are priorities.

USS Flat Washer Thru Hardened Zinc Yellow Cr+6 (Import)

Import thru hardened washers with zinc yellow Cr+6 finish combine strength with added corrosion resistance at a competitive price. The golden finish allows for easy identification on the job site while ensuring long service life in exposed conditions. Contractors value them for their durability and cost efficiency in structural and mechanical projects where visibility and protection matter.

USS Washers (Thru Hardened) - Material Options

South Coast Fasteners stocks USS washers (thru-hardened) in medium carbon steel that has been heat-treated to deliver the strength and durability needed for structural and industrial use.

Medium Carbon Steel (Thru-Hardened, Import)

Medium carbon steel washers that are thru-hardened offer superior wear resistance and load-bearing strength. The heat treatment process ensures they won’t crush or deform under the pressure of high-strength bolts, making them a trusted choice in structural steel connections, bridgework, and industrial equipment assembly. Import versions provide a cost-effective option while still meeting the performance requirements for demanding jobs.

USS Washers (Thru Hardened) - Available Finishes

South Coast Fasteners offers USS washers (thru-hardened) in finishes that provide versatility, protection, and the right appearance for your work environment.

Plain

Plain finish washers are uncoated, making them a simple and economical choice for dry indoor environments. They are also suitable for shop fabrication, welding applications, or situations where a custom finish will be applied after installation. Their straightforward design keeps them flexible for a wide range of uses.

Yellow Zinc Cr+6

Yellow zinc Cr+6 adds a layer of corrosion resistance while giving washers a bright, golden finish that stands out on the jobsite. This finish is often selected for industrial and construction projects where visibility and durability both matter. It provides moderate protection against rust while maintaining a clean, professional appearance.

Zinc Cr+3

Zinc Cr+3 is a protective finish that provides a clean, bright appearance while guarding against rust and wear. It extends the service life of fasteners and washers by creating a thin, durable barrier over the base material. Contractors prefer zinc Cr+3 coatings for indoor and light commercial applications where both performance and appearance are important. This finish balances cost efficiency with dependable corrosion resistance, making it one of the most commonly specified options across industries.

Why Choose South Coast Fasteners?

South Coast Fasteners understands how important it is to use washers that can handle heavy loads and harsh conditions. That’s why we supply USS washers that meet strict quality standards, backed by knowledgeable support and fast delivery. With us, you can be confident that every washer you order will perform the way your project requires.

Order USS Washers (Thru-Hardened) Online Today

South Coast Fasteners makes it easy to order USS washers that are thru-hardened for strength and durability. Browse our online selection to find the right sizes and finishes, or reach out for help with specs, bulk orders, or technical questions. We’re here to make fastening solutions simple, reliable, and ready when you need them.