The DIN125 Flat Washer is a precision-engineered industrial component designed to distribute the load of a threaded fastener. By increasing the bearing surface area, these plain washers prevent the sinking of bearing surfaces and significantly reduce the surface pressure applied to the fastened object, ensuring structural integrity in high-stress environments.
Manufactured to rigorous international standards including DIN, ISO, and ANSI/ASTM, our flat washers are available in a wide range of materials from carbon steel to high-grade alloys. Whether for heavy industry, automotive assembly, or general retail applications, these washers provide the essential stability and protection required for professional-grade fastening solutions.
Detailed Parameters
| Standard | DIN125, DIN9021, GB, ISO, ANSI/ASTM, BS, BSW, JIS | Size Range | M4 - M64 |
|---|---|---|---|
| Material | Carbon Steel: Q195, Q235, 1035, 1045, 65Mn | Grades | 4.8, 8.8, 10.9, 12.9 |
| Finish Options | Plain, Zinc Plated (Clear/Blue/Yellow/Black), HDG, Dacromet | Certification | ISO9001, SGS |
| OEM Service | Available based on drawing or samples | Packaging | 5kg, 10kg, 25kg bag/carton + pallet |
| Application | Heavy Industry, Automotive, Retail, General Industry | Product Type | Flat Washer / Plain Washer |
Key Advantages
Surface Protection
Prevents the fastener head from damaging the workpiece surface during tightening.
Corrosion Resistance
Multiple plating options like HDG and Dacromet ensure long-term durability in harsh environments.
Load Distribution
Effectively spreads the clamping force over a larger area to prevent material deformation.
Global Standards
Strict adherence to DIN and ISO standards ensures perfect compatibility worldwide.
Precision Fit
Accurate inner and outer diameter tolerances for a seamless fit with bolts and nuts.
Customizable OEM
Fully customizable dimensions and materials to meet specific project blueprints.
Product Gallery
Management Platforms
Quality Control
Strict ISO9001 certified production lines for zero-defect delivery.
Production Fleet
High-efficiency stamping and threading machines for rapid scaling.
Supply Chain
Optimized logistics for timely delivery of bulk orders globally.
Material Sourcing
Premium carbon steel sourcing from vetted mills for consistent hardness.
Inventory Mgmt
Large stock of standard M4-M64 sizes for immediate dispatch.
Technical Support
Expert engineering guidance for selecting the right grade and finish.
Investment Return Comparison
| Feature | Standard Washers | Our Premium DIN125 | Value Added |
|---|---|---|---|
| Durability | Basic | High-Grade Carbon Steel | Extended Life |
| Corrosion | Low | Multi-layer Plating | Low Maintenance |
| Tolerance | Variable | Precision Machined | Perfect Fit |
| Consistency | Moderate | ISO9001 Certified | Reduced Waste |
| Compatibility | Limited | Global Standard Support | Universal Use |
Frequently Asked Questions
Flat washers are used to increase the size of a screw's bearing surface area, which reduces surface pressure and prevents the fastener from sinking into or damaging the material being fastened.
A fender washer has a significantly larger outside diameter relative to its center hole compared to a standard flat washer, allowing it to distribute force over an even wider area.
Yes. Flat washers distribute the load, while lock washers create tension to prevent the nut from loosening. They serve different but complementary purposes.
Generally, the flat washer is placed against the workpiece first, followed by the lock washer, and then the nut or bolt head.
For harsh environments, we recommend Hot Dip Galvanized (HDG) or Dacromet finishes, which provide superior protection against oxidation and rust.
Yes, we offer OEM services where washers can be manufactured according to your specific technical drawings or provided samples.
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