Flat Washers (Thru Hardened)

South Coast Fasteners supplies flat washers that are thru-hardened, designed to provide extra strength and durability in demanding applications. These washers undergo a heat-treating process that significantly increases their hardness, making them resistant to deformation and ideal for high-stress environments. Whether you call them thru-hardened or thru hardened washers, these products offer reliable performance where standard flat washers might fall short.

Your Supplier for High-Performance Industrial Fasteners

If you're looking for a trusted supplier of wholesale industrial fasteners, South Coast Fasteners is your solution. Contact our Anaheim, CA office to learn more about our product options and how we can support your project needs. For helpful service, fast order turnaround, and high-quality fasteners in bulk or small batches, choose South Coast Fasteners.

Material Options

South Coast Fasteners stocks thru-hardened flat washers in medium carbon steel and import options that provide the hardness, strength, and durability needed for structural and mechanical connections.

Medium Carbon Steel (USS and SAE Standards)

Medium carbon steel washers are heat-treated to increase hardness and resist crushing under heavy loads. Available in both USS and SAE standards, these washers deliver consistency in critical applications like bridgework, steel construction, and heavy equipment assembly. Contractors choose them because they provide dependable strength and long service life where softer washers would fail.

Import Versions (USS and SAE)

Import thru-hardened washers offer a cost-effective option while still meeting the requirements of structural and mechanical jobs. These washers are manufactured to USS and SAE standards, making them suitable for projects where budget considerations matter but performance can’t be sacrificed. They remain a practical choice for general construction, maintenance, and repair work.

Available Finishes

South Coast Fasteners offers thru-hardened flat washers in finishes that provide the right balance of protection, performance, and adaptability to jobsite conditions.

Plain

Plain finish washers come uncoated, offering a straightforward solution for indoor projects or controlled environments. They are weld-friendly and can be painted or coated after installation, making them versatile for fabrication shops and restoration work.

Yellow Zinc Cr+6

Yellow zinc Cr+6 adds a corrosion-resistant layer with a bright, golden appearance. This finish not only protects washers from rust but also makes them easy to identify on-site. It is often selected for industrial, automotive, and structural applications where both durability and visibility are important.

Why Choose South Coast Fasteners?

South Coast Fasteners delivers thru-hardened flat washers that meet strict performance standards for high-load applications. We back our products with deep inventory, knowledgeable support, and fast shipping, so you can keep projects moving with confidence. When strength, consistency, and service matter, we’re the partner you can count on.

Order Thru-Hardened Flat Washers Online Today

South Coast Fasteners makes it easy to order thru-hardened flat washers in the sizes and finishes your project calls for. Whether you need bulk quantities for a structural job or specific parts for shop work, our team is here to provide solutions. With us, you’ll always have washers that deliver the durability and dependability your projects demand.