GB 97 Zinc-Plated Carbon Steel Flat Washers
GB97 Standard Zinc Plated Carbon Steel M2-M30 Sizes
Zinc-plated carbon steel flat washers are used with bolts, screws, and nuts to spread load, protect the connected surface, and improve fastening stability. DISLAB Precision supplies GB 97 zinc-plated carbon steel flat washers for machinery, construction, automotive, furniture, equipment assembly, electronics, and general industrial fastening.
These carbon steel flat washers are manufactured by precision cold stamping, then finished with white zinc plating for improved corrosion resistance. The washer surface is flat and clean, with smooth edges, stable thickness, and a uniform coating that helps reduce rust, wear, and local pressure damage around the bolt hole.
Standard sizes cover M2 to M30, with multiple outer diameter and thickness options for different screw and bolt assemblies. Bulk supply, custom packaging, and size matching support are available for distributors, OEM buyers, and production projects.
⚙️ Performance & Strength
- Material: Carbon steel
- Surface: White zinc plated / galvanized finish
- Function: Load spreading and surface protection
- Precision: GB97 flat washer standard
- Flatness: Stable flat surface for bolted joints
🔩 Complete Specifications
- Diameter range: M2-M30
- Outer diameter: 4mm-57mm
- Thickness: 0.5mm-3.0mm
- Total models: 83+ sizes
- Compatibility: Standard bolts, screws, and nuts
🏭 Applications
- ✔ Industrial machinery and equipment assembly
- ✔ Automotive and motorcycle maintenance
- ✔ Construction steel structure fastening
- ✔ Furniture, shelving, and bracket mounting
- ✔ Electrical, electronics, and general hardware
Note: These GB97 flat washer sizes are suitable for most standard screw, bolt, and nut fastening requirements. Please confirm inner diameter, outer diameter, thickness, finish, and quantity when requesting a quote.
✨ Manufacturing Details & Practical Advantages
Precision cold stamping creates a smooth washer surface, clean inner and outer edges, and consistent thickness. This helps the zinc-plated carbon steel flat washer sit evenly under the bolt head or nut and reduces the risk of surface damage during tightening.
Zinc plated protection: The galvanized coating covers the washer surface to improve corrosion resistance in storage, transport, indoor equipment, and many general outdoor applications. The flat washer helps distribute clamping force and protects softer materials such as wood, plastic, aluminum, or coated steel.
Cost-effective bulk supply: These zinc plated flat washers are suitable for industrial production, engineering projects, hardware distribution, and high-volume procurement where consistent dimensions and stable supply matter.
📌 Detailed Application Scenarios
Flat washers distribute bolt pressure in machinery, automated lines, brackets, frames, and equipment assemblies.
Used with bolts and nuts in steel structures, supports, brackets, and outdoor fastening points.
Useful for repair kits, body hardware, chassis accessories, and general bolt assemblies.
Common in battery equipment, communication cabinets, enclosures, and equipment mounting hardware.
Helps prevent wood, plastic, or sheet metal from being crushed by bolt tightening force.
M2-M30 sizes support mixed-stock purchasing for wholesalers, retailers, and assembly factories.
Direct Contact Channels
- One-stop supply for zinc-plated carbon steel flat washers, bolts, nuts, screws, and related industrial hardware
- OEM/ODM support for distributors, assembly factories, and export-oriented buyers
