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

These Hillman USS flat washers are made of durable steel with a hot-dipped galvanized finish for corrosion resistance. Sized for 5/8-inch coarse-thread bolts, they distribute load to protect wood and hardware in outdoor and heavy-duty applications.

Key Features:

• Corrosion-Resistant Finish: Hot-dipped galvanization helps withstand moisture and outdoor exposure
• Load Distribution: Flat washer design spreads force to prevent surface damage and loosening
• USS Sizing: Fits 5/8 in. coarse-thread bolts and screws for robust assemblies
• Durable Steel Construction: Strong, reliable performance for construction and deck hardware
• Convenient Pack: 25 washers for project and jobsite needs

Specifications Table:

Frequently Asked Questions (FAQ):

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

Q: Are they suitable for outdoor use?
A: Yes. The hot-dipped galvanized finish offers strong corrosion resistance for outdoor and marine-adjacent environments.

Q: Do they meet any standards?
A: The packaging indicates conformance to ASTM A153 for zinc coating by hot-dip galvanizing.

Q: What material are the washers?
A: Steel with a hot-dipped galvanized coating.

Q: How many washers are in the box?
A: 25 pieces.

Industrial Strength, Quiet Sophistication

With a silvery, galvanic sheen, these flat washers bring a refined utility to architectural hardware. The generous USS profile balances proportion and presence, protecting woods and finishes while lending a clean, intentional look. Pair them with matte black or raw steel fasteners for a modern, mixed-metal moment. Essential, enduring, and elegantly simple—hardware that elevates everyday builds.

Secure your projects with galvanized confidence—add this 25-pack of 5/8 in. Hillman USS flat washers to your cart today.