Hillman Zinc-Plated Steel 5/8 in. USS Flat Washer, 25-Pack

Regular price $12.49

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5/8 in. Zinc-Plated USS Flat Washers (25-Pack)

Durable Hillman flat washers add bearing surface and help prevent bolts and screws from digging into wood or metal. Made of steel with a corrosion-resistant zinc plating, these 5/8 in. USS washers pair with coarse-thread bolts for reliable fastening in construction and repair projects.


Key Features:

  • Corrosion Resistance: Zinc-plated steel resists rust for long-lasting performance
  • USS Fit: Sized for coarse-thread 5/8 in. bolts and screws
  • Added Support: Distributes load to protect surfaces and prevent pull-through
  • Versatile Use: Ideal for woodworking, metalwork, and general repairs
  • Convenient Pack: Boxed 25-count for jobsite or shop stocking

Specifications Table:

Specification Details
Brand Hillman
Material Steel
Finish Zinc Plated
Washer Type Flat
Standard USS (coarse thread)
Size 5/8 inch
Count 25 pack
Inch/Metric Inch
Packaging Type Boxed
Package Height 2.2 in
Package Width 3.3 in
Package Length 3.6 in
Package Weight 1.9 lbs

Frequently Asked Questions (FAQ):

Q: What bolt size are these washers compatible with?
A: They are designed for 5/8 inch coarse-thread (USS) bolts and screws.


Q: Are they suitable for outdoor use?
A: Yes, the zinc plating provides corrosion resistance suitable for many indoor and outdoor applications; for harsh environments, consider stainless steel.


Q: What does USS mean?
A: USS refers to coarse-thread sizing standards typically used with larger, coarse-thread bolts.


Q: Can I use these with metric hardware?
A: No, these are inch-sized washers intended for 5/8 in. hardware.


Q: How many washers are included?
A: 25 washers per box.


Streamlined Strength in a Refined Zinc Finish

These zinc-plated flat washers bring a crisp, modern polish to functional hardware, elevating everyday builds with subtle shine. Their broad profile delivers a clean, graphic line—perfect for exposed fasteners in loft-style shelving or utility-inspired furniture. Pair with blackened steel brackets for striking contrast, or let the zinc echo stainless appliances for cohesion. A small detail with big impact, they’re the quiet luxury behind rock-solid, beautifully finished installs.


Upgrade your fastening projects with these corrosion-resistant 5/8 in. USS washers—add the 25-pack to your cart today.

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