480pc 304 Stainless Steel Lock Washer Set M3–M10 Assortment

Keep your projects fastened tight with this 480-piece 304 Stainless Steel Lock & Spring Washer Assortment. Whether you're tackling home repairs, automotive work, or workshop builds, this comprehensive kit gives you the right washer for every job — all organized in a sturdy, divided storage box for instant access.

Why Choose This Washer Set?

• Premium 304 Stainless Steel — Corrosion-resistant, rust-proof, and built for long-term durability in demanding environments.
• 480 Pieces, Multiple Sizes — Includes lock washers and flat washers in sizes M3, M4, M5, M6, M8, and M10 to cover a wide range of nuts and bolts.
• Optimal Load Distribution — Each washer evenly spreads the bolt or screw load, preventing nut or bolt heads from tearing through materials and ensuring a secure, lasting fit.
• Versatile & Compatible — Perfect for use with screws, nuts, and bolts across home improvement, automotive, machinery, metalworking, and general DIY projects.
• Convenient Organized Storage — Comes in a sturdy plastic box with divided compartments and an inside lid display, so your washers stay sorted and ready to use every time.

Product Specifications

Perfect For

• Home repair and furniture assembly
• Automotive and mechanical maintenance
• Metalworking and fabrication projects
• Plumbing and HVAC installations
• Workshop and garage builds

Note: Due to manual measurement, there may be a size variance of 1–2mm. Colors may slightly vary due to monitor and lighting differences.

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For more information on safe use of fasteners and hardware in construction and repair projects, visit the U.S. Consumer Product Safety Commission (CPSC) for guidelines on safe hardware use.

Learn more: Washer

Frequently Asked Questions

Q: What sizes of lock washers are included in this 480-piece stainless steel washer assortment?

A: This assortment includes both lock washers and flat washers in six sizes: M3, M4, M5, M6, M8, and M10, giving you a comprehensive range for most standard nuts and bolts used in home repair, automotive, and workshop projects.

Q: Are these washers rust-proof and suitable for outdoor use?

A: Yes! These washers are made from 304 stainless steel, which is highly resistant to corrosion and rust, making them suitable for both indoor and outdoor applications including automotive, plumbing, and general metalworking.

Q: How are the washers organized in the box?

A: The 480-piece set comes in a sturdy plastic organizer box with divided compartments for each size. The inside lid features a display label for easy identification, so you can quickly find the right washer without rummaging through loose pieces.

Q: What is the material grade of these stainless steel washers?

A: These washers are made from 304 grade stainless steel, one of the most widely used and trusted grades for fastener hardware due to its excellent corrosion resistance, strength, and versatility across a wide range of applications.