Domestic USA F436 Flat Washers with a Plain Finish (Uncoated). Manufactured in the United States, these washers provide essential support and load distribution for critical, high-strength bolting assemblies where the lack of a coating is required.
Our structural F436 washers meet the stringent ASTM F436 specification, ensuring consistent mechanical performance and dimensional accuracy. The plain, black, or self-colored finish is often preferred for specific applications, including:
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Controlled Friction: The plain surface provides predictable and consistent friction characteristics required for certain torquing procedures and bolted joints.
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Ready for Secondary Processing: These uncoated washers are ideal if you plan to apply a specialized coating after installation or require a different protective finish than is commercially available.
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Superior Load Distribution: As a hardened structural washer, the F436 designation means it is designed to distribute the load evenly, preventing the fastener from embedding into the material surface under high-tension loads.
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Made in the USA Quality: By choosing Made in the USA F436 Washers, you guarantee superior material traceability, reliability, and adherence to the most demanding domestic quality controls.
These plain finish F436 flat washers are the standard companion for uncoated structural bolts, such as A325 and A490 bolts, in non-corrosive or interior environments. They are crucial for steel erection, heavy equipment assembly, and industrial applications where high strength is non-negotiable.
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