| Customization: | Available |
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| Type: | Lock Washer |
| Material: | Carbon Steel |
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Our DIN 6797 Toothed Lock Washers with External Teeth are engineered to provide superior locking force and ensure a secure connection in high-vibration environments. Made from high-quality materials such as carbon steel, stainless steel, or spring steel, these washers feature external serrations that effectively prevent loosening under extreme conditions. Designed for use in a variety of applications, including automotive, machinery, electrical equipment, and other industrial sectors, these washers are known for their durability and long-lasting performance. Available in sizes ranging from M2.5 to M30, they can be customized in terms of thickness, surface finishes, and materials to meet your specific requirements. With options like galvanized, black oxide, and phosphated finishes, our DIN 6797 washers are a reliable solution for ensuring the safety and reliability of your threaded connections, offering excellent anti-loosening properties and vibration resistance. Choose DIN 6797 Toothed Lock Washers with External Teeth for a dependable fastening solution that ensures your assemblies remain secure and intact.
Enhanced Locking Performance: External serrations provide a strong and reliable locking force, preventing loosening even under high vibration conditions.
Vibration Resistance: Specifically designed to withstand the effects of vibration, making it ideal for applications in dynamic environments.
Durable Materials: Manufactured from high-quality carbon steel, stainless steel, and spring steel to ensure long-lasting performance.
Wide Size Range: Available in sizes from M2.5 to M30, with the option for customization in thickness and surface finishes.
Variety of Surface Finishes: Offers multiple surface treatments including galvanized, black oxide, and phosphated finishes for enhanced corrosion resistance.
Cost-Effective: High durability and performance at competitive prices, providing a reliable fastening solution for various industries.
Automotive Industry: Used in vehicle assembly to secure critical parts and prevent bolt loosening in high-vibration environments.
Machinery: Ideal for industrial machinery that operates under dynamic loads and requires reliable, long-lasting fasteners.
Electrical Equipment: Ensures secure connections in electrical panels and equipment, providing safety and preventing failure.
Construction and Heavy Equipment: Perfect for use in heavy machinery and construction equipment that are exposed to harsh conditions and vibrations.
General Industrial Applications: Suitable for any application requiring high-performance lock washers to prevent loosening and maintain secure connections.
Common Materials and Their Applications in Industrial Components
| Material | Description & Applications |
|---|
| 65Mn Steel | High carbon steel with excellent hardness and wear resistance. Commonly used for springs, tools, and automotive parts requiring high strength and durability. |
| 316 Stainless Steel | Austenitic stainless steel known for its exceptional corrosion resistance, especially in marine and chemical environments. Ideal for food processing, pharmaceuticals, and marine applications. |
| 304 Stainless Steel | The most widely used stainless steel with good corrosion resistance, formability, and weldability. Commonly used in kitchen equipment, architectural applications, and chemical industries. |
| Carbon Steel (Q235) | Low-carbon steel with good weldability and strength. Widely used in construction, automotive, and manufacturing industries for structural components. |
| Alloy Steel (4140) | Medium-carbon steel alloyed with chromium and molybdenum, offering high strength and toughness. Common in manufacturing of shafts, gears, and heavy-duty machinery parts. |
| Brass | Copper-zinc alloy known for its machinability and corrosion resistance. Used in plumbing, electrical components, and decorative items. |
| Aluminum | Lightweight metal with good corrosion resistance, used in aerospace, automotive, and construction industries for components requiring strength-to-weight ratio. |
| Titanium | Known for high strength, low weight, and excellent corrosion resistance, especially in aerospace, medical implants, and high-performance applications. |
| Surface Treatment | Description & Applications |
|---|
| Dacromet | A chrome-free zinc coating offering excellent corrosion resistance. Suitable for automotive and industrial equipment exposed to harsh environments. |
| Galvanizing (Zinc Plating) | Zinc coating applied through electroplating or hot-dip, providing strong corrosion protection. Common in construction, outdoor machinery, and pipelines. |
| Black Oxide (Blackening) | A chemical oxidation process that creates a black, protective layer on steel. Ideal for mechanical parts, automotive components, and tools where appearance and corrosion resistance are important. |
| Zinc-Chromate Coating | A zinc coating with added chromium for enhanced corrosion resistance. Used in aerospace, and high-performance applications. |
| Nickel Plating | A nickel coating providing high hardness and excellent corrosion resistance, with a smooth surface. Used in electronics, precision parts, and industrial applications requiring high gloss and protection. |
| Phosphating | A process that forms a phosphate layer on the metal surface, improving adhesion and corrosion resistance. Used in automotive and machinery applications requiring good paint adhesion. |
| Aluminum Spraying | A coating of aluminum sprayed onto steel surfaces for heat and corrosion resistance. Used in high-temperature environments like boilers and engines. |
| Passivation | A process that enhances the corrosion resistance of stainless steel or aluminum by creating a protective oxide layer. Common in food processing, pharmaceutical, and medical equipment. |
| Coating (Polymer, Resin) | A thin film of polymers (e.g., polyurethane, epoxy) applied to the surface for corrosion resistance and wear protection. Used in electronics, appliances, and architectural applications. |
| Size | 2.2 | 2.7 | 3.2 | 3.7 | 4.3 | 5.3 | 6.4 | |
| d | min=nominal size | 2.2 | 2.7 | 3.2 | 3.7 | 4.3 | 5.3 | 6.4 |
| max | 2.34 | 2.84 | 3.38 | 3.88 | 4.48 | 5.48 | 6.62 | |
| dc | ≈ | 4.2 | 5.1 | 6 | 7 | 8 | 9.8 | 11.8 |
| h | 0.2 | 0.2 | 0.2 | 0.25 | 0.25 | 0.3 | 0.4 | |
| Number of Teeth | min | 6 | 6 | 6 | 6 | 8 | 8 | 10 |
| For Nominal Thread Diameter | M2 | M2.5 | M3 | M3.5 | M4 | M5 | M6 | |
| per 1000 units ≈ kg | 0.02 | 0.025 | 0.025 | 0.04 | 0.05 | 0.12 | 0.2 | |
| Size | 8.4 | 10.5 | 13 | 15 | 17 | |||
| d | min=nominal size | 8.4 | 10.5 | 13 | 15 | 17 | ||
| max | 8.62 | 10.77 | 13.27 | 15.27 | 17.27 | |||
| dc | ≈ | 15.3 | 19 | 23 | 26.2 | 30.2 | ||
| h | 0.4 | 0.5 | 0.5 | 0.6 | 0.6 | |||
| Number of Teeth | min | 10 | 10 | 10 | 12 | 12 | ||
| For Nominal Thread Diameter | M8 | M10 | M12 | M14 | M16 | |||
| per 1000 units ≈ kg | 0.4 | 0.7 | 1.2 | 1.3 | 1.3 | |||
Customizable: Adjust bag quantities, carton sizes/printing, pallet materials upon request.
Key Benefits
√ Low Damage Rate: Multi-layer protection minimizes transit risks.
√ Efficient Handling: Uniform packaging for automated logistics.
With over 20 years of specialization in washer manufacturing, we operate a 1,800+ sqm modern production facility equipped with 30+ fully automated machines (including precision stamping presses and automated production lines), delivering an annual output exceeding 200 million pieces. Our 40+ professional production team guarantees rapid prototyping and mass order fulfillment. Products are widely used in hardware, machinery, construction and other industries. We serve hundreds of domestic clients while maintaining stable supply to global markets. Ample stock available, supporting customized materials/sizes.
| Category | Advantages |
|---|
| Production Capabilities | - 20+ Years Expertise: Specialized in precision washer production since 2005 - Scalable Capacity: 1,800+ sqm facility with 30+ automated production - Annual Output: 200 million+ pieces (consistent quality control) - Rapid Prototyping: 24-hour sample service with 3-day mass production turnaround - Flexible MOQ: Support trial orders from 500pcs to million-piece bulk orders |
| Quality Assurance | - Precision Tolerance: ±0.1mm accuracy maintained through CNC control - 3-Stage Inspection: Full-process QC from raw materials → production → shipment - Traceability System: Batch number tracking for all products |
| Customization Services | - Material Options: Stainless steel (304/316), carbon steel, brass, copper, etc. - Surface Treatments: Zinc plating, nickel plating, passivation, Dacromet, etc. - Technical Support: Dedicated engineers for product selection solutions - CAD Compatibility: Direct tooling from customer CAD files |
| Supply Chain Strengths | - Direct Material Procurement: Partnership with tier-1 steel mills - Safety Stock: Maintain 300+ metric tons of ready-to-ship inventory - Dual-Shift Production: 40+ skilled workers ensuring stable capacity - Price Stability: Seasonal procurement plans to buffer material fluctuations |
| Logistics Services | - Global Shipping: Established partnerships with DHL, FedEx, and ocean freight forwarders - Express Delivery: 48-hour dispatch for standard products - Production Transparency: Available real-time workshop video updates - Bilingual Support: Technical documentation in English/Chinese |
| Cost Advantages | - 15-20% Cost Savings: Achieved through vertical integration & automation - Mold Efficiency: 30% faster die changeover than industry average - Material Utilization: 99% efficiency through optimized nesting |
| Category | FAQ |
|---|---|
| Production & Ordering | |
| 1. Minimum Order Quantity (MOQ) | - Standard washers: 500 pcs - Custom designs: 5,000 pcs (depends on complexity) |
| 2. Sample Policy | - Standard items: Free samples (customer pays shipping) - Custom items: Sample fee (deductible from bulk orders) |
| 3. Sample Lead Time | - Existing tooling: 24 hours + shipping - New tooling: 3-5 business days |
| 4. Tooling Costs | - Simple dies: $110-275/set - Complex tooling: Quoted based on CAD design |
| Technical Specifications | |
| 5. Dimensional Tolerance | - Standard: ±0.1mm - Precision: ±0.05mm (+20% surcharge) |
| 6. Material Options | |
| 7. Surface Finishes | - Plating: Zinc/Nickel (48-96 hours salt spray resistance) - Specialty: Dacromet (1000+ hours corrosion resistance) |
| Quality Assurance | |
| 8. Production Monitoring | - Real-time workshop video access - Daily progress reports |
| 9. Quality Issue Resolution | - 48-hour response guarantee - Priority replacement shipping |
| 10. Audit Compliance | - Accepts SGS audits - Requires 2-week advance notice |
| Commercial Terms | |
| 11. Payment Terms | - New clients: 30% deposit, 70% before shipment - Approved accounts: O/A 30 days |
| 12. Production Capacity | - Base capacity: 15M pcs/month - Maximum capacity: 20M pcs/month (with advance notice) |
| 13. Toll Processing | - Accepted (material certificates required) - 3% material overage required |
| Logistics & Support | |
| 14. Expedited Orders | - 48-hour rush service (+15% fee) - Priority stock allocation |
| 15. Export Documentation | - Commercial Invoice - Packing List - Certificate of Origin |
| 16. Quality Certificates | - Dimensional inspection report - Salt spray test results - Material composition analysis |
| Value-Added Services | |
| 17. Packaging Options | - Carton packaging - Pallet packaging - Bulk packaging |
| 18. Damage Claims | Required documents: 1. Damage photos at destination 2. Carrier inspection report (Processed within 72 hours) |
| 19. Insurance Coverage | - $700,000 product liability per incident - Global coverage |
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