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Home > Tools & Hardware > Hardware Accessories > Spring > Heavy Duty Double Coil Spring Washer 8.8 Grade Carbon Steel for High Tensile Applications

Heavy Duty Double Coil Spring Washer 8.8 Grade Carbon Steel for High Tensile Applications

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Heavy Duty Double Coil Spring Washer 8.8 Grade Carbon Steel for High Tensile Applications photo-4

Heavy Duty Double Coil Spring Washer 8.8 Grade Carbon Steel for High Tensile Applications photo-5

Product Spotlights

Double coil design for superior anti-loosening, 8.8 grade carbon steel for high tensile strength, customizable sizes and surface treatments, backed by 25+ years of manufacturing expertise and global export experience.

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

Get Latest Price

Material:

Other, Carbon Steel (8.8 Grade)

Type:

Double Coil Spring Washer

Surface Treatment:

Plain, Zinc Plated, or Customized

Contact Supplier Request Quote Chat Now

Anping County Boli Hardware Wiremesh Products Factory

2Yrs

Payment & Shipping

Payment Methods:

Port of Shipment:

tianjin shanghai qingdao

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Material Other, Carbon Steel (8.8 Grade)

Type Double Coil Spring Washer

Surface Treatment Plain, Zinc Plated, or Customized

Size Range M6 to M30 (Standard), Customizable

Hardness HRC 38-46 (Typical)

Application High Tensile Bolted Joints, Automotive, Machinery

Standards DIN 127, DIN 7980 (Compatible)

Packaging Carton, Pallet, or Custom

Anping County Boli Hardware Wiremesh Products Factory, established in 1998, is a professional manufacturer with over two decades of experience in producing high-quality fasteners and hardware components. Our Heavy Duty Double Coil Spring Washer, made from 8.8 grade carbon steel, is engineered to provide superior locking performance in high tensile applications. This washer is designed to prevent loosening under extreme vibration and heavy loads, ensuring long-term reliability in critical bolted connections. Backed by our annual export value of US$5-10 million and global presence across North America, Europe, Asia, and beyond, we deliver products that meet rigorous industrial standards.

Product Features and Technical Specifications:

Double Coil Design: Provides enhanced spring action and greater load distribution compared to single coil washers, effectively reducing the risk of bolt loosening.
8.8 Grade Carbon Steel: High tensile strength and hardness ensure durability under heavy stress and repeated use.
Corrosion Resistance: Available with various surface treatments (plain, zinc plated, etc.) to suit different environmental conditions.
Precision Manufacturing: Consistent dimensions and tight tolerances for reliable fit and performance.
Versatile Applications: Ideal for automotive assemblies, construction machinery, heavy equipment, and other high-tension bolted joints.

Technical Parameters (Typical):

Parameter	Specification
Material	Carbon Steel (Grade 8.8)
Hardness (HRC)	38–46
Tensile Strength (MPa)	≥800
Standard Sizes	M6, M8, M10, M12, M16, M20, M24, M30
Surface Finish	Plain, Zinc Plated, Black Oxide (Optional)
Packaging	Bulk, Carton, Pallet (Customizable)

Customer Benefits:

Enhanced Safety: Prevents bolt loosening in critical applications, reducing maintenance and accident risks.
Cost Efficiency: Long service life minimizes replacement frequency and downtime.
Easy Installation: Standard dimensions compatible with existing bolt assemblies.
Global Compliance: Meets international standards such as DIN 127 and DIN 7980, ensuring interchangeability.
Custom Options: Size, surface treatment, and packaging can be tailored to specific project requirements.

Why Choose Anping County Boli Hardware Wiremesh Products Factory? With over 25 years of manufacturing experience, we have established a reputation for quality and reliability. Our annual export value of US$5-10 million reflects the trust of clients in North America, Europe, Asia, Africa, and Oceania. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery. Our dedicated quality control team inspects every batch to guarantee consistency. Whether you need standard sizes or custom designs, we are committed to providing top-tier products at competitive prices. Contact us today to discuss your requirements and experience our professional service.

Frequently Asked Questions (FAQ):

What is the difference between a double coil spring washer and a single coil?
The double coil design provides greater spring force and better load distribution, making it suitable for high-vibration and high-tensile applications where single coil washers may fail.
What grade of steel is used in this washer?
The washer is made from 8.8 grade carbon steel, which offers high tensile strength and hardness. This grade is commonly used for high-strength fasteners.
What sizes are available?
Standard sizes range from M6 to M30. Custom sizes and non-standard dimensions can be manufactured upon request.
Can the surface treatment be customized?
Yes, we offer plain, zinc plated, black oxide, and other treatments. Please inform us of your specific requirement for corrosion protection or appearance.
Are these washers suitable for outdoor or marine environments?
For outdoor or marine use, we recommend zinc plated or other corrosion-resistant coatings. Plain steel is suitable for indoor applications with low humidity.
What is the packaging option?
Standard packaging includes bulk in cartons or pallets. Custom packaging (e.g., small boxes, polybags) is available based on your order quantity.
Do you have any quality certifications?
Our factory follows strict internal quality control procedures. While we do not claim specific certifications unless requested, our products comply with common industry standards such as DIN 127.
How can I place an order or request a quote?
You can contact us via email or phone. Please provide the required size, quantity, surface treatment, and any special requirements. We will respond with a detailed quotation and lead time.