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China Large flat washers Manufacturer, Supplier, Factory

When your industrial or construction project demands reliable load distribution, superior surface protection, and enhanced fastener stability, you need the right Large Washers. Our extensive selection of Large Washers is engineered for durability and performance in the most demanding applications. From heavy machinery assembly to structural steelwork, our large flat washers provide a critical interface between a bolt head or nut and the component surface, preventing loosening under vibration and reducing stress concentration. We offer a comprehensive range of sizes and materials to meet diverse specifications, ensuring you find the perfect Large Washers for your specific engineering needs.


Our Large Flat Washers are manufactured to the highest standards, providing exceptional performance. Key specifications for our Large Flat Washers are detailed below:

  • Material Composition: Available in carbon steel (Grade 1018/1045), stainless steel (Grades 304 & 316), and aluminum alloy.
  • Surface Finishes: Zinc plating, hot-dip galvanizing, black oxide, and plain (self-color).
  • Standards Compliance: Conforms to ASME B18.21.1, ANSI B18.22.1, and other international standards.
  • Temperature Resistance: Performance maintained from -50°F to +500°F, depending on material.
  • Corrosion Resistance: Stainless steel and galvanized options offer superior protection against rust and chemical exposure.
Nominal Size (ID in inches) Outside Diameter (OD in inches) Thickness (in inches) Standard Material
1/4 1.000 0.083 Carbon Steel
3/8 1.250 0.104 Carbon Steel
1/2 1.750 0.134 Carbon Steel
5/8 2.000 0.148 Carbon Steel
3/4 2.500 0.165 Carbon Steel
1 3.250 0.188 Carbon Steel

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