3/8 in. Zinc-Plated USS Flat Washers (335-Pack)

These Hillman USS flat washers add surface area and resistance to bolts and screws to help prevent pull-through and material damage. Made of durable steel with a corrosion-resistant zinc-plated finish, they’re sized for 3/8-inch coarse-thread fasteners and ideal for general construction, woodworking, and repairs.

Key Features:

• Corrosion-Resistant Finish: Zinc plating helps protect against rust in indoor and covered outdoor applications
• Reliable Support: Flat washer design distributes load to prevent fasteners from sinking into wood or soft materials
• USS Sizing: Fits 3/8-inch coarse-thread bolts and screws for standard hardware compatibility
• Durable Construction: Made from strong steel for long-lasting performance
• Bulk Value Pack: 335 washers included for projects, maintenance, and jobsite needs

Specifications Table:

Frequently Asked Questions (FAQ):

Q: Are these washers compatible with metric bolts?
A: No. They are USS washers sized for 3/8-inch inch-based coarse-thread fasteners.

Q: Can they be used outdoors?
A: The zinc plating offers basic corrosion resistance; for harsh outdoor or marine environments, consider stainless steel washers.

Q: What type of bolts should I pair with these washers?
A: Use 3/8-inch coarse-thread (USS) bolts or screws with matching zinc finish to avoid galvanic corrosion.

Q: Do these washers prevent wood damage?
A: Yes. Flat washers increase surface area under the fastener head, reducing the chance of the fastener boring into wood.

Q: How are they packaged?
A: Boxed package containing 335 washers.

Streamlined Utility with a Polished Edge

A simple zinc-plated washer can elevate the integrity of your build, lending a clean, tailored finish to functional details. The cool metallic sheen pairs beautifully with raw woods and matte hardware, creating balance in modern rustic installations. Use them to refine open-shelving brackets or custom furniture joints for a crisp, intentional look. This pack delivers the quiet luxury of durability and design discipline in every connection.

Secure your projects with confidence—add this 335-pack of 3/8-inch zinc-plated USS flat washers to your toolkit today.