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Help Center304 Stainless Steel Double-layer Spring Washer DIN 127 M8 M10 M12 Anti-loosening
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Since 1998, Anping County Boli Hardware Wiremesh Products Factory has been a trusted manufacturer of precision fastening components. Our 304 Stainless Steel Double-layer Spring Washer DIN 127 in sizes M8, M10, and M12 is engineered to deliver reliable anti-loosening performance in demanding environments. With annual export values reaching US$5-10 million, we supply to markets across North America, Europe, Asia, and beyond, ensuring consistent quality and competitive pricing.
This spring washer features a unique double-layer design that provides superior elastic force, effectively preventing fastener loosening under vibration and dynamic loads. Made from 304 stainless steel, it offers excellent corrosion resistance, making it suitable for outdoor, marine, and chemical exposure applications. Compliant with DIN 127 standards, it ensures precise fit and reliable performance.
Key Features & Benefits:
- Double-layer construction: Enhanced spring action vs. single-layer washers, increasing locking force by up to 30%.
- 304 stainless steel: Resists rust, oxidation, and corrosion in harsh environments; ideal for food processing, marine, and chemical industries.
- DIN 127 compliance: Guarantees dimensional accuracy, load capacity, and interchangeability with global fastening systems.
- Available sizes M8, M10, M12: Covers common bolt diameters for mechanical assembly, automotive, and construction.
- Anti-loosening performance: Prevents nut and bolt loosening due to vibration, thermal expansion, or shock, reducing maintenance costs.
- Cost-effective solution: Eliminates the need for liquid threadlockers or additional locking devices in many applications.
Technical Specifications (Table):
| Parameter | Specification |
| Standard | DIN 127 |
| Material | 304 Stainless Steel (1.4301) |
| Type | Double-layer Spring Washer |
| Sizes Available | M8 (ID 8.4mm, OD 14mm, Thickness 1.6mm), M10 (ID 10.5mm, OD 17mm, Thickness 2.0mm), M12 (ID 12.5mm, OD 20mm, Thickness 2.5mm) |
| Surface Finish | Natural (passivated), Custom finishes available upon request |
| Hardness | HRC 40-48 (spring temper) |
| Operating Temperature | -200°C to +800°C |
Why Choose Our 304 Stainless Steel Double-layer Spring Washer?
- Proven durability: Over 25 years of manufacturing experience ensures consistent quality and long service life.
- Export expertise: With annual export value of US$5-10 million, we have served clients in more than 15 countries and regions, including North America, Europe, and Southeast Asia.
- Flexible shipping: Available from ports in Tianjin, Qingdao, Shanghai, and Foshan, with reliable logistics support for timely delivery.
- Customization options: We can provide special sizes, finishes, or packaging to meet your specific project requirements.
Our factory is located in Hengshui, Hebei, China – a hub for hardware manufacturing. We maintain strict quality control from raw material sourcing to final inspection. Each batch of spring washers undergoes dimensional checks, hardness testing, and corrosion resistance validation to ensure they meet international standards.
Frequently Asked Questions (FAQ)
- What is the difference between a single-layer and double-layer spring washer? A double-layer washer provides twice the spring force and better anti-loosening performance, especially in high-vibration environments. It is recommended for critical applications where reliability is paramount.
- Can these washers be used with stainless steel bolts? Yes, using the same 304 stainless steel material prevents galvanic corrosion and ensures compatibility. They are ideal for use with 304 or 316 bolts.
- Are the washers pre-lubricated? No, they are supplied in a natural, clean state. If needed, we can apply a thin lubricant coating upon request.
- Do you offer other sizes beyond M8, M10, M12? Yes, we can produce custom sizes from M3 to M30 based on your specifications. Please contact our sales team for a quote.
- What is the minimum order quantity (MOQ)? For standard sizes, MOQ is 1000 pieces. For custom sizes, MOQ is subject to negotiation.
- How do you package the washers for export? Typically, we use plastic bags inside cartons, then palletize for sea freight. Custom packaging (e.g., bulk, blister packs) is available.
- Can I get a sample before placing a bulk order? Certainly. We offer free samples for quality evaluation; you only need to cover the shipping cost.
- Is there a warranty for this product? We guarantee that our products meet the DIN 127 standard and will be free from defects in material and workmanship. If any issues arise, we will replace or refund accordingly.
Join thousands of satisfied customers worldwide who rely on Anping Boli for their fastening needs. Our team is ready to provide technical support, competitive pricing, and fast delivery. Contact us today to request a quote or sample! With our proven track record and commitment to quality, you can trust our 304 Stainless Steel Double-layer Spring Washer to keep your assemblies secure and durable.
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