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Spring Washers Split Lock Washers Helical Spring Washers (2).jpg

Spring Washers Split Lock Washers Helical Spring Washers (3).jpg

Spring Washers Split Lock Washers Helical Spring Washers (1).jpg

China Spring Washers Suppliers | Factory for Split Lock & Helical Spring Washers

Hebei Chudu Metal Products Co., Ltd. is a leading factory in China, specializing in high-quality spring washers, also known as split lock washers or helical spring washers. Our reliable spring washers are engineered to prevent fasteners from loosening under vibration and dynamic loads. Ideal for a variety of applications, these washers offer excellent axial flexibility and robust resistance to rotational movement in bolted connections. As trusted suppliers, we are committed to delivering superior products that meet the needs of our clients in diverse industries

Material Carbon Steel
Material Stainless Steel (SS201, SS304, SS316)
Material Alloy Steel
Material Phosphor Bronze (optional)

Product Details

Spring Washers Split Lock Washers Helical Spring Washers (3)

Spring Washers Split Lock Washers Helical Spring Washers (1)

Product Overview

Product Name	Carriage Bolt (Round Head Square Neck Bolt)
Standards	DIN 603, ASME B18.5, ISO 8677, or customized
Material	Carbon Steel, Stainless Steel (SS304, SS316), Alloy Steel
Grade	4.8, 6.8, 8.8, 10.9, A2-70, A4-80
Surface Finish	Zinc Plated (Blue / Yellow) Hot Dip Galvanized (HDG) Black Oxide Dacromet / Ruspert Plain / Oiled
Thread Type	Full Thread / Partial Thread, Metric / UNC / UNF
Size Range	Metric: M5 – M24, Length 10mm – 300mm Inch: 1/4" – 1", Length 3/4" – 12" Customized sizes available

Product Features

Helical shape creates spring tension for anti-loosening
Maintains preload in bolted joints under dynamic conditions
Designed to bite into bearing surface and mating fastener
Suitable for medium-duty locking performance
Easy to install and compatible with standard bolts/nuts
Available in light, medium, and heavy series

Spring Washers Split Lock Washers Helical Spring Washers (2)

Applications

Automotive

Automotive and machinery assembly

Electrical

Electrical equipment and appliances

Industrial

Industrial machines and tools

Construction

Construction and steel structure connections

Renewable

Renewable energy and wind power installations

Other

Vibration-prone equipment and bolted assemblies

Packaging & Delivery

Packaging

Bulk in cartons and wooden pallets

Small boxes, plastic bags, or customized packaging

Lead Time

7–30 days based on quantity and order specs

Shipping Port

Tianjin Port, China

Why Choose Hebei Chudu

Over a decade of expertise in washer and fastener production

Strict quality control with ISO 9001 certification

Full product range: spring, flat, fender, sealing, and custom washers

Fast response, stable supply, and competitive pricing

OEM/ODM supported with custom materials and surface treatments

Export experience with customers in 40+ countries

Frequently Asked Questions

What standards do Hebei Chudu's carriage bolts comply with?

Our carriage bolts are manufactured in strict compliance with international standards including DIN 603, ASME B18.5, and ISO 8677. Custom specifications are also supported based on client requirements.

What materials and grades do you offer for your fasteners?

We offer a wide range of materials including Carbon Steel, Stainless Steel (SS304, SS316), and Alloy Steel. Available grades include 4.8, 6.8, 8.8, 10.9 for carbon steel, and A2-70, A4-80 for stainless steel.

What surface treatments are available for custom orders?

To prevent corrosion and enhance durability, we provide multiple finish options including Blue/Yellow Zinc Plating, Hot Dip Galvanizing (HDG), Black Oxide, Dacromet, Ruspert, and Plain/Oiled finishes.

What is the lead time and shipping arrangement for orders?

Our standard lead time ranges between 7 to 30 days, depending on the order quantity and customization details. All shipments are safely packed in bulk cartons on wooden pallets or small custom boxes and dispatched from Tianjin Port, China.

Do you support OEM/ODM customization services?

Yes, Hebei Chudu fully supports OEM and ODM services. We can customize dimensions, thread types (Metric, UNC, UNF), materials, surface treatments, and specific packaging layouts according to your engineering drawings.