GB97 A2 304 Stainless Steel Flat Washers M1.6–M24 | 1/50/100pcs

JARBLUE GB97 A2 304 Stainless Steel Flat Washers – Plain Gaskets for M1.6 to M24 Screws & Bolts

Keep your fastening projects secure and professional with these premium GB97 A2 304 Stainless Steel Flat Washers from JARBLUE. Available in flexible pack sizes (1, 50, or 100 pieces) and a wide range of metric sizes from M1.6 to M24, these plain gaskets are engineered to distribute load evenly, protect surfaces, and prevent bolt loosening across a broad range of applications.

Whether you're tackling woodworking, mechanical assembly, plumbing, or general DIY projects, these flat washers deliver consistent, reliable performance every time.

Key Features

• Premium A2 304 Stainless Steel: Corrosion-resistant and highly durable — ideal for both indoor and outdoor use.
• Wide Size Range: Covers M1.6, M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M16, M20, and M24 — one trusted source for all your metric fastener needs.
• GB97 Standard Compliant: Manufactured to meet GB97 specifications, ensuring precise dimensions and consistent quality.
• CE Certified: Meets applicable CE certification requirements for safety and quality assurance.
• Smooth Flat Surface: Plain (uncoated) finish provides excellent contact with bolt heads and nut faces, ensuring even load distribution.
• Thickness Range: 0.3mm to 4mm, accommodating light-duty to heavy-duty fastening requirements.
• Flexible Quantities: Order as few as 1 or as many as 100 pieces — great for both quick repairs and bulk projects.
• No High-Concern Chemicals: Safe for use in a variety of environments, with no hazardous substances identified.

Specifications

Common Applications

• Woodworking and furniture assembly
• Mechanical and automotive repairs
• Plumbing and pipework installations
• Electronic enclosures and equipment mounting
• Construction and structural projects
• DIY home improvement and repair

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Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What sizes are available for these GB97 304 stainless steel flat washers?

A: These flat washers are available in 13 metric sizes: M1.6, M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M16, M20, and M24, with a thickness range of 0.3mm to 4mm depending on the size selected. This comprehensive range makes them suitable for a wide variety of fastening applications.

Q: Are these washers suitable for outdoor or marine use?

A: Yes. Made from A2 304 stainless steel, these flat washers offer excellent resistance to rust and corrosion, making them well-suited for both indoor and outdoor environments. However, for highly corrosive marine or chemical environments, A4 316 stainless steel may be more appropriate.

Q: What is the difference between GB97 and other washer standards?

A: GB97 is a Chinese national standard (Guobiao) that specifies the dimensions and tolerances for plain flat washers. It is comparable to DIN 125 and ISO 7089/7090 standards in terms of overall dimensions, making these washers compatible with most standard metric bolts and screws.

Q: Can I buy just one washer, or do I have to buy a pack?

A: These washers are available in flexible quantities — you can purchase as few as 1 piece, or opt for a 50-pack or 100-pack for larger projects or to keep spares on hand.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.