Our DIN125 Flat Washers are precision-engineered industrial fasteners designed to provide a stable bearing surface and protect the fastened object from damage during tightening. By increasing the distribution area of the load, these plain washers effectively reduce surface pressure, preventing the bolt head or nut from sinking into the material and ensuring a secure, long-term connection across various industrial applications.
Manufactured from high-grade carbon steel and available in multiple finishes, our DIN125 washers meet stringent global standards including DIN, ISO, and ANSI. Whether you are operating in heavy industry, automotive manufacturing, or general retail, our comprehensive size range from M4 to M64 and customizable OEM options ensure that you receive the exact specifications required for your project's structural integrity.
Detailed Parameters
| Product Type | Flat Washer / Plain Washer (DIN125, DIN9021) | Size Range | M4 to M64 |
|---|---|---|---|
| Materials | Carbon Steel (Q195, Q235, 1035, 1045, 65Mn) | Grade Levels | 4.8, 8.8, 10.9, 12.9 |
| Standards | GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS | Finish Options | Plain, Zinc Plated (Clear/Blue/Yellow/Black), HDG, Dacromet |
| Certifications | ISO9001, SGS | Customization | OEM available according to drawings or samples |
| Packaging | 5kg, 10kg, 25kg bag/carton + pallet | Applications | Heavy Industry, Automotive, General Industry, Retail |
Key Advantages
Surface Protection
Prevents the sinking of bearing surfaces and protects the workpiece from deformation during high-torque fastening.
Corrosion Resistance
Multiple plating options including HDG and Zinc Plated to ensure durability in harsh environmental conditions.
Global Compliance
Strict adherence to ISO, DIN, and ANSI standards ensures seamless interchangeability in international projects.
Load Distribution
Increases the bearing surface area of screws, reducing localized pressure for enhanced structural safety.
Precision Sizing
Available in a vast range from M4 to M64 with tight tolerances for a perfect fit every time.
OEM Flexibility
Custom manufacturing based on your specific drawings or samples to meet unique engineering requirements.
Product Gallery
Management Platforms
Inventory Control
Optimized warehousing for various sizes (M4-M64) ensuring rapid shipment and stock availability.
Quality Assurance
Rigorous ISO9001 certified inspections for material grade and dimensional accuracy.
Order Tracking
Real-time updates on production status and shipping logistics for global clients.
Custom Engineering
Dedicated technical support for OEM specifications and drawing review processes.
Logistic Network
Secure packaging with pallets and specialized cartons to prevent transit damage.
Material Sourcing
Direct partnerships with premium steel mills for consistent Q235 and 1045 quality.
Investment Return Comparison
| Feature | Standard Washers | Our Premium DIN125 | Long-term Value |
|---|---|---|---|
| Durability | Basic Protection | Multi-layer Plating | Low Replacement Cost |
| Fitment | Variable Tolerances | High Precision | Faster Assembly Time |
| Material | Generic Carbon Steel | Certified Grade Steel | Higher Load Capacity |
| Lifespan | Short-term/Mild Use | Industrial Grade | Extended Service Life |
| Compliance | Uncertified | ISO9001/SGS Certified | Reduced Risk/Liability |
Frequently Asked Questions
Flat washers are used to distribute the load of a threaded fastener over a larger surface area. This prevents the nut or bolt head from damaging the material and prevents the fastener from sinking into the bearing surface.
While both are flat, a fender washer has a significantly larger outside diameter relative to its center hole, allowing it to distribute force over an even wider area than a standard DIN125 washer.
Yes. The flat washer is used to distribute pressure and protect the surface, while the lock washer creates tension to prevent the nut from loosening due to vibration.
Generally, the flat washer should be placed against the workpiece first, followed by the lock washer, and then the nut. This ensures the lock washer holds the assembly securely in place.
For high-corrosion environments, Hot Dip Galvanized (HDG) or Dacromet finishes are highly recommended as they provide superior protection compared to standard zinc plating.
Absolutely. We provide comprehensive OEM services where washers can be manufactured according to your specific technical drawings or physical samples.
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