What is the Minimum Order Quantity (MOQ)?

The Minimum Order Quantity is 1 Kg, allowing for flexible ordering for small batches or testing purposes.

Does the manufacturer have quality certifications?

Yes, the manufacturer is ISO-certified and implements a rigorous two-stage quality assurance protocol including dimensional verification and torque testing.

What is the company's background and experience?

Established in 2009, the company is an ISO-certified fastener manufacturer with 15 years of export experience, serving global markets in North America, Europe, and Asia.

Heavy-Duty Precision Curved Spring Washers DIN 6904 for Industrial Applications

Name: Heavy-Duty Precision Curved Spring Washers DIN 6904 for Industrial Applications
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2192136875

Zhejiang, ChinaNingbo Yinzhou Sokun Import and Export Co., Ltd.

US$0.03

10-4,999 Pieces

US$0.02

5,000-99,999 Pieces

US$0.01

100,000+ Pieces

Product profile

Customization

Available

Type

Spring Lock Washers

Material

Brass

Model NO.

DIN 6904

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Name

Spring Lock Washers

Selling Units

Building, Industry, Machinery

Package

Customer'require

Delivery Time

15-30

Transport Package

Cartons & Pallets or According to Customer''s Requ

Specification

Trademark

SOKUN

Origin

Zhejiang

HS Code

7318150000

Production Capacity

100000000

Key features

DIN 6904 Standard Compliance: Precision curved spring washers strictly adhering to DIN 6904 industrial standards.

Flexible Customization Options: Customizable standards, finishes, and sizes based on customer designs or samples.

Multi-Material Selection: Available in carbon steel and stainless steel for diverse heavy-duty applications.

Comprehensive Surface Finishes: Options include Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, and Black Oxide.

ISO Certified Manufacturer: Established in 2009 with rigorous quality assurance and lean manufacturing protocols.

Free Sample Availability: 1-3 pcs free standard samples available; cost refundable upon bulk order confirmation.

Low Minimum Order Quantity: Flexible MOQ starting from just 1 Kg to accommodate small batch requirements.

Global Export Experience: 15 years of export experience serving North America, Europe, Asia, and other global markets.

Company profile

High Repeat Buyers ChoiceODM ServicesR&D CapabilitiesProduction Process Visualization

Ningbo Yinzhou Sokun Import and Export Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 15 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤4.96h

AI-Powered supplier vetting

SummarySokun is a limited company with 21 employees, related companies, and product coverage including fasteners, machined parts, and stamping parts. It supports customization from samples and designs, offers ODM services, and reports OEM service for well-known brands. Quality processes include quality assurance, documented inspection instructions, and complaint-handling records, although finished-product inspection is random and only one quality inspector is reported. Production-related strengths include in-stock capability, CNC and punching equipment, and one-month stated lead times in both peak and off-season periods. Key limitations are the absence of a valid manufacturing-capacity contract with related subcontractors, no overseas warehouse, branches, agents, or showrooms, and no documented R&D audit materials, new products in the past year, or R&D patents. Financial credibility cannot be determined from the provided information.

After-Sales capabilityThe supplier has a clear customer-complaint procedure with followed records and accepts several quotation and payment terms. However, it has no overseas warehouse, showroom, agent, or branch, and reports zero countries with overseas services, limiting evidence of localized after-sales support.

R&D capabilityThe supplier provides ODM and multiple customization-based design services, but reports no new products during the past year, no available SDK, no R&D audit documentation, and zero R&D patents. These facts indicate design support but limited documented evidence of independent innovation.

Production capacityProduction evidence includes CNC and punching equipment, in-stock capability, one-month lead times in both peak and off-season, and a product scope aligned with machined and stamping parts. Nevertheless, there is no valid manufacturing-capacity contract with related subcontractors, which creates a documented capacity-governance weakness.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, flexible customization, and minor customization, and also offers ODM services. This is direct evidence of broad customization capability.

Product Q&A

Q:What materials are used for these washers?

The washers are manufactured using carbon steel and stainless steel to ensure durability and corrosion resistance.

Q:Can the size and finish be customized?

Yes, sizes are available according to customer requirements, and finishes include Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, and Black Oxide.

Q:What is the standard delivery time?

Normally, the delivery time is 30-40 days, though this may vary based on order volume and season.

Q:Is it possible to get free samples?

Yes, 1-3 pieces of standard specification samples are available for free. The sample cost is refundable upon bulk order confirmation.

Q:What are the payment terms?

Standard terms are 30% T/T deposit with 70% balance against Bill of Lading copy. For orders under $1,000 USD, full advance payment is recommended.