Hot-dip galvanized USS flat washers for exposed and moisture-prone connections. The Simpson Strong-Tie ASTM F844 USS Washer in a hot-dip galvanized (HDG) finish gives a bolt head or nut a wide, flat bearing surface, helping spread the clamping load over a larger area.

Available in sizes to match common bolt and anchor rod diameters, so you can pair the washer with the fastener on your project.

Key Features

• Standard: Meets ASTM F844 requirements for USS flat washers.
• Hot-dip galvanized finish: Provides added corrosion protection for outdoor and moisture-prone conditions.
• Wide bearing surface: The broad outside diameter helps distribute load under the bolt head or nut.
• Steel construction: Unhardened steel washer made for general use.
• Size choices: Available in multiple sizes to fit common bolts and threaded rods.
• Sold by the piece: Order the quantity your job calls for.

Applications

• Exterior framing and outdoor structural connections
• Anchor bolt and threaded rod assemblies in exposed locations
• Bolted connections in wood, steel, and concrete construction

ASTM F844 washers are unhardened and made for general use. Match the washer finish to the bolt or rod it will be used with, and review your project specifications, Simpson Strong-Tie documentation, and local code where hardened washers or a specific finish are required. Browse more Simpson hardware in our related collections.

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