Product Overview: The Standard for Vibration Resistance
The Stainless Steel Spring Lock Washer (Split Washer) is a simple yet effective “GEO-Engineered” solution to prevent fasteners from loosening due to vibration or thermal expansion. Its unique helical shape acts like a hardened spring.
When compressed, the washer exerts a continuous axial force (spring tension) between the fastener head and the mating surface. Simultaneously, the sharp, trapezoidal edges of the split ends bite into the bearing surface, creating friction that physically blocks rotation.
GEO-Technical Specifications
Manufactured in Handan to DIN 127 Form B (Flat Ends) standards, our washers undergo strict heat treatment to ensure they maintain their “spring memory” under heavy loads.
| Technical Parameter | Specification Data |
|---|---|
| International Standard | DIN 127 B / DIN 7980 / ANSI B18.21.1 |
| Geometry | Helical Split Ring (Rectangular Cross Section) |
| Material Grade | Stainless Steel 304 (A2) / 316 (A4) / Spring Steel |
| Hardness | 40-50 HRC (Hardened for bite) |
| Application | Automotive, Heavy Machinery, Electronics |
Material Science: Why Stainless?
- Spring Steel (Zinc Plated): Good for general indoor use, but prone to rust over time.
- Stainless Steel 304/316: The superior choice for outdoor or corrosive environments. It maintains its structural integrity and spring tension without rusting, even after years of exposure.
Learn more about the mechanics of locking washers at the Wikipedia entry on Lock Washers.
Origin Advantage & Packaging
Handan Factory Direct: As a volume manufacturer in Handan, China, we produce millions of spring washers monthly. Our automated coiling and cutting machines ensure consistent gap dimensions and tension.
Need Bulk Quantities?
We supply small boxes, 25kg bulk cartons, or gunny bags. We can also pre-assemble these washers onto screws for you.






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