Midwest Fasteners Grade 2 Hot-Dip Galvanized Steel USS Flat Washer

Midwest Fasteners Grade 2 Hot-Dip Galvanized Steel USS Flat Washer

The Midwest Fasteners USS Flat Washer family is built from Grade 2 steel with a hot-dip galvanized finish for corrosion resistance in exterior and outdoor applications. Manufactured to the USS (United States Standard) pattern, these washers distribute load under the head of a bolt or nut and protect the substrate surface from damage during tightening. Compared to SAE washers, the USS pattern typically offers a larger outside diameter for a given bolt size, giving extra bearing area against wood, sheet metal, or other substrate materials. This family is available in four washer sizes — 1/4" x 5/16" x 3/4", 5/16" x 3/8" x 7/8", 3/8" x 7/16" x 1-1/32", and 1/2" x 9/16" x 1-3/8" — so you can match the washer to the specific bolt or lag screw diameter on your job. Manufactured in Taiwan from Grade 2 galvanized steel, this family is a dependable choice for general construction, fencing, and maintenance work where moisture exposure is a concern.

Key Features

• Size Range: Available in 1/4" x 5/16" x 3/4", 5/16" x 3/8" x 7/8", 3/8" x 7/16" x 1-1/32", and 1/2" x 9/16" x 1-3/8" to fit a range of bolt and fastener diameters.
• Material & Finish: Grade 2 steel construction with a hot-dip galvanized coating that offers enhanced corrosion resistance compared to standard zinc plating, making it suitable for exterior and high-moisture environments.
• Pattern: USS (United States Standard) flat washer pattern, giving a wider bearing surface than SAE washers and commonly specified alongside USS bolts and hardware.
• Grade: Grade 2 steel construction, appropriate for general-purpose fastening tasks.
• Load Distribution: Flat profile spreads clamping load evenly under the head of a bolt or nut, helping protect the substrate surface from damage during tightening.
• Product Type: USS pattern flat washer for general-purpose load distribution under fastener heads.
• Country of Origin: Manufactured in Taiwan.

Technical Specifications

• Product Size: 1/4" - 1/2"

Typical Applications

• Outdoor construction and fencing projects exposed to weather and moisture.
• General maintenance and repair tasks requiring a corrosion-resistant washer.
• Assembly work paired with USS bolts, hex bolts, or lag screws needing a wider load-bearing surface.
• Agricultural and fabrication applications where galvanized hardware is specified for longevity.

Why Midwest Fasteners?

Midwest Fasteners builds this USS flat washer family from Grade 2 galvanized steel with a hot-dip galvanized finish for dependable corrosion resistance in outdoor and maintenance environments. Offering four sizes in one consistent USS pattern and finish, manufactured in Taiwan, it gives contractors and maintenance teams a reliable option that holds up to the elements on every job, regardless of which bolt diameter is on hand. Grade 2 steel construction provides a solid, durable base suited to general construction, fencing, and maintenance work.