Contact Platform Support
Help CenterDouble Coil Spring Washer 304 Stainless Steel M6-M20 DIN127 Standard Lock Washer
Product Spotlights
Related Products
-
Double Coil Spring Washer Used in Automotive Engine Assembly Vibration DampeningNegotiableMOQ: 1 Piece -
Double Coil Spring Washer ANSI B18.21.1 304 Stainless Steel 8.8 GradeNegotiableMOQ: 1 Piece
-
Double Coil Spring Washer for Industrial Machinery Fastening Bolt Preload RetentionNegotiableMOQ: 1 Piece
-
M8 M12 Double Coil Spring Washer Hardened 45# Steel Zinc Plated Standard WasherNegotiableMOQ: 1 Piece
-
DIN 127 Double Coil Spring Washer 304 Stainless Steel M10 Anti-Loosening FastenerNegotiableMOQ: 1 Piece
Boli Hardware, established in 1998 and headquartered in Hengshui, Hebei, China, is a professional manufacturer dedicated to producing high-quality fastening components. Our Double Coil Spring Washer 304 Stainless Steel M6-M20 DIN127 Standard Lock Washer is designed to provide reliable anti-loosening performance in demanding environments. Made from premium 304 stainless steel, these washers offer excellent corrosion resistance and durability, making them ideal for applications where vibration and stress are common. With over two decades of manufacturing experience, we ensure consistent quality and precision in every batch.
Our double coil spring washers are engineered to meet the DIN127 standard, ensuring compatibility with metric bolts and nuts. The unique double coil design provides increased spring force and better load distribution compared to single coil washers, effectively preventing nut loosening under dynamic loads. Available in sizes from M6 to M20, they are suitable for a wide range of industrial, automotive, and construction applications.
Key Features & Technical Specifications
- Material: 304 Stainless Steel (0Cr18Ni9) – offers excellent corrosion resistance, suitable for outdoor and marine environments.
- Standard: DIN127 – complies with international dimensional and performance requirements.
- Double Coil Design: Provides higher spring force and better resistance to vibration-induced loosening.
- Size Range: M6, M8, M10, M12, M14, M16, M18, M20 – metric sizes available.
- Surface Finish: Plain (natural) or passivated finish for enhanced protection.
- Hardness: Properly tempered to maintain elasticity without brittleness.
- Packaging: Available in bulk bags, boxes, or custom packaging upon request.
Dimensional Data (Approximate, in mm)
| Size | Inner Diameter (d) | Outer Diameter (D) | Thickness (t) |
| M6 | 6.1 | 12.0 | 1.6 |
| M8 | 8.1 | 16.0 | 2.0 |
| M10 | 10.2 | 20.0 | 2.5 |
| M12 | 12.2 | 24.0 | 3.0 |
| M16 | 16.2 | 32.0 | 4.0 |
| M20 | 20.2 | 40.0 | 5.0 |
Note: Tolerances follow DIN127 specifications. Custom sizes are available upon request.
Advantages & Benefits
- Superior Anti-Loosening: The double coil structure provides two independent spring forces, significantly reducing the risk of nut loosening due to vibration or thermal expansion.
- Corrosion Resistance: 304 stainless steel ensures long service life in humid, chemical, or outdoor environments.
- Temperature Resistance: Suitable for operating temperatures from -200°C to +800°C (depending on grade).
- Cost-Effective: Compared to specialized locking devices, these washers offer a simple and economical solution.
- Easy Installation: No special tools required – simply place between nut and workpiece.
- Reusable: Can be removed and reinstalled multiple times without losing spring properties.
Our double coil spring washers undergo strict quality control during production. Each batch is inspected for dimensional accuracy, hardness, and surface finish to ensure consistent performance.
Trust & Reliability
Anping County Boli Hardware Wiremesh Products Factory has been a trusted manufacturer since 1998. With an annual export value of US$5 million to US$10 million, we serve customers across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic market. Our products are shipped from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery worldwide. We are committed to providing high-quality fasteners at competitive prices, backed by over 20 years of manufacturing expertise. Whether you need standard sizes or custom specifications, we are ready to support your projects with reliable products and excellent service. Contact us today for a quote or more information.
Frequently Asked Questions (FAQ)
Q1: What is the difference between a double coil spring washer and a single coil spring washer?
A1: A double coil spring washer has two complete turns of spring steel, providing higher spring force and better load distribution compared to a single coil. It offers superior anti-loosening performance under heavy vibration.
Q2: Are these washers suitable for use with stainless steel bolts?
A2: Yes, 304 stainless steel washers are compatible with 304 stainless steel bolts and other fasteners. They help prevent galvanic corrosion when used with similar materials.
Q3: Can I get sizes outside the M6-M20 range?
A3: Yes, we can produce custom sizes upon request. Please contact our sales team with your specifications.
Q4: Do these washers meet DIN127 standards exactly?
A4: Yes, our washers are manufactured according to DIN127 dimensions and tolerances. They are fully interchangeable with standard metric spring washers.
Q5: What is the typical lead time for bulk orders?
A5: For standard sizes, lead time is usually 7-15 days after order confirmation. Custom sizes may require 15-25 days. We ship from Tianjin, Qingdao, Shanghai, or Foshan ports.
Q6: Can these washers be used in high-temperature applications?
A6: 304 stainless steel can withstand temperatures up to approximately 800°C in continuous service, but spring properties may be affected above 300°C. For high-temperature applications, consider other materials like Inconel.
Q7: Are sample orders available?
A7: Yes, we offer samples for evaluation. Please contact us with your request and shipping details.
Q8: How are these washers packaged?
A8: Standard packaging is in poly bags or small boxes. Bulk packaging in cartons or pallets is available. Custom packaging with your logo or branding can be arranged.
Send Inquiry to This Supplier
You May Also Like
-
Double Coil Spring Washer A4-70 Stainless Steel M6 M10 Industrial HardwareNegotiableMOQ: 1 Piece
-
Double Coil Spring Washer M14 M16 Carbon Steel Black Oxide Finish MetricNegotiableMOQ: 1 Piece
-
DIN 7980 Double Coil Spring Washer Steel Spring Steel 62HRC For BoltsNegotiableMOQ: 1 Piece
-
Double Coil Spring Washer For Automotive Assembly Anti-Vibration FastenersNegotiableMOQ: 1 Piece
-
Double Coil Spring Washer Used In Heavy Machinery Bolting To Prevent LooseningNegotiableMOQ: 1 Piece
-
Double Coil Spring Washer Standard Compliant 304 Stainless Steel 50 Pcs PackNegotiableMOQ: 1 Piece
-
Double Coil Spring Washer M8 M10 1 Year Warranty Mill Test Report AvailableNegotiableMOQ: 1 Piece
-
Double Coil Spring Washer M20 304 Stainless Steel Spring Lock Washer 10 PcsNegotiableMOQ: 1 Piece
-
Rail Baseplate for 50kg/m Rail, 4-bolt Pattern, 22mm Diameter HolesNegotiableMOQ: 1 Piece
-
Rail Baseplate With 3% Manganese Alloy, 32mm Base Thickness, Tensile Strength 500MPaNegotiableMOQ: 1 Piece
