| Payment Terms | T/T, Western Union |
| Supply Ability | 15tons per month |
| Delivery Time | 15-30 Workdays |
| Packaging Details | Standard Shipping Package |
| Product name | Flat Spring Washers |
| Finish | Zinc Plated |
| Durability | High |
| Outer Diameter | 6mm-60mm |
| Surface | Zinc Plated ( Clear/Blue/Yellow/Black ) |
| Delivery | 7-15workdays |
| Types | Spring Washer |
| Mark | Manufacturer's ID and F436 |
| Surfacetreatment | Phosphated |
| Corrosion Resistance | High |
| Style | square flat washer |
| Brand Name | TOBO |
| Model Number | Flat Spring Washers |
| Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai, China |
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Product Specification
| Payment Terms | T/T, Western Union | Supply Ability | 15tons per month |
| Delivery Time | 15-30 Workdays | Packaging Details | Standard Shipping Package |
| Product name | Flat Spring Washers | Finish | Zinc Plated |
| Durability | High | Outer Diameter | 6mm-60mm |
| Surface | Zinc Plated ( Clear/Blue/Yellow/Black ) | Delivery | 7-15workdays |
| Types | Spring Washer | Mark | Manufacturer's ID and F436 |
| Surfacetreatment | Phosphated | Corrosion Resistance | High |
| Style | square flat washer | Brand Name | TOBO |
| Model Number | Flat Spring Washers | Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai, China |
Flat Spring Washers for Vibration-Resistant Bolted Connections
Our Flat Spring Washers are precision-engineered fastening components designed to maintain tension in bolted assemblies under dynamic conditions. Manufactured from heat-treated spring steel with a split-coil design, these washers exert constant axial pressure between the nut and bearing surface. This spring action compensates for minor relaxation, wear, and thermal movement, effectively preventing fastener loosening caused by vibration and shock loads. Available in multiple materials and finishes, they provide a cost-effective solution for enhancing joint reliability across countless applications.
| Parameter | Details |
|---|---|
| Material | Spring Steel (Carbon) / Stainless Steel (304/316) / Phosphor Bronze |
| Surface Finish | Plain / Zinc Plated / Yellow Zinc / Hot-Dip Galvanized / Black Oxide |
| Heat Treatment | Hardened and Tempered |
| Design Type | Split Coil / Helical Spring |
| Cross-Section | Rectangular (Standard) |
| Size Range (Inch) | #2 to 1" |
| Size Range (Metric) | M2 to M24 |
| Standards | DIN 127 / ASME B18.21.1 / ISO 127 |
| Operating Temperature | -20°C to +120°C (Varies by material) |
Flat spring washers are used across industries wherever bolted joints are subject to movement, vibration, or thermal cycling.
Automotive Assembly: Secures engine components, suspension systems, chassis fasteners, and drivetrain connections against road vibration.
Industrial Machinery: Prevents loosening in conveyors, pumps, compressors, presses, and other equipment with moving parts.
Construction Equipment: Maintains bolt tension in excavators, loaders, cranes, and heavy machinery operating on rough terrain.
Home Appliances: Used in washing machines, dryers, lawn equipment, and power tools where vibration is common.
Electrical Enclosures: Secures grounding connections and component mounts in control panels and junction boxes.
General Maintenance: A standard item for mechanics, technicians, and DIY repairs across virtually every fastener application.
Choosing our flat spring washers provides a simple yet highly effective method for improving bolted joint reliability.
Prevents Costly Loosening: The spring action maintains clamp load under vibration, preventing nuts from backing off and eliminating the need for frequent retorquing.
Compensates for Joint Settlement: Takes up slack as gaskets compress, coatings settle, or materials relax over time, ensuring the joint remains tight.
Absorbs Dynamic Loads: Cushions the fastener against shock loads and impact, reducing stress on bolt threads and extending assembly life.
Cost-Effective Protection: Delivers critical locking performance at a fraction of the cost of chemical threadlockers or specialized locking nuts.
Easy Retrofit: Requires no design changes or special tools; simply add between the nut and bearing surface of any standard bolted assembly.
Our flat spring washers incorporate key design elements that ensure consistent performance and broad compatibility.
Split Coil Design: The helical cut creates a spring action that exerts continuous outward pressure, keeping the nut seated against the bolt threads.
Precision Heat Treatment: Hardened and tempered to provide consistent spring rate and resistance to taking a permanent set under compression.
Rectangular Cross-Section: Provides a stable bearing surface and ensures the washer remains properly oriented during installation.
Burr-Free Edges: Smooth inner and outer diameters prevent damage to bolt threads and mating surfaces during assembly and disassembly.
Corrosion-Resistant Finishes: Available with zinc plating, galvanizing, or stainless steel construction to match environmental requirements.
Standardized Dimensions: Manufactured to DIN, ASME, and ISO specifications for interchangeability with all standard bolts and nuts.
Wide Size Range: Available in both inch and metric sizes from miniature (#2/M2) to heavy-duty (1"/M24) configurations![]()
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FAQ
1. Are you trading company or manufacturer ?
We are manufacturer ,You can see the Alibaba certification.
2. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
5000000-6000000
Ecer Certification:
Verified Supplier
TOBO GROUP LTD is a professional fastener manufacturer and exporter in China. We produce various types of fasteners (include non-standard) in GB, DIN, BS, ANSI/ASME, IFI, ISO, and JIS with 300 tons of monthly productivity. Our main products are bolts, nuts, screws, threaded rods, plain was... TOBO GROUP LTD is a professional fastener manufacturer and exporter in China. We produce various types of fasteners (include non-standard) in GB, DIN, BS, ANSI/ASME, IFI, ISO, and JIS with 300 tons of monthly productivity. Our main products are bolts, nuts, screws, threaded rods, plain was...
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