What is the minimum order quantity?

The minimum order quantity is 1 Kg.

What quality standards do you follow?

We follow ASTM/ISO standards with a rigorous two-stage quality assurance protocol including dimensional verification and material certification.

What are your main products?

Our main products include industrial fastening solutions (bolts, nuts, washers) and solar energy installation systems.

Reliable Durable Spring Washers for Optimal Assembly Performance

Name: Reliable Durable Spring Washers for Optimal Assembly Performance
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2199899185

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

Disc Spring

Material

Brass

Model NO.

DIN 6908

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Name

Disc Spring

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 6908 Standard Compliance: Manufactured to meet strict DIN 6908 standards for reliable screw and washer assemblies.

Flexible Customization Options: Full customization available from samples or designs with flexible material and finish options.

Diverse Material Selection: Available in carbon steel and stainless steel to suit various environmental requirements.

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

ISO Certified Manufacturer: Established in 2009 with ISO certification and vertically integrated production facilities.

Rigorous Quality Assurance: Two-stage protocol including pre-production sampling and full batch torque/salt spray testing.

Free Sample Availability: Free standard samples (1-3 pcs) available with express shipping options via DHL/UPS/FedEx.

Global Market Experience: Serving clients in North America, Europe, Asia, and the Middle East for over 15 years.

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 is the delivery time?

Normally 30-40 days. Peak season lead time is one month, while off-season is also one month.

Q:Can you provide samples?

Yes, free samples (1-3 pcs) are available. Customized samples take 15 working days. 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. For orders under $1,000, full advance payment is recommended. LC at sight is negotiable for bulk orders.

Q:What materials are available?

We offer Carbon steel and Stainless steel. Surface finishes include Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, Black Oxide, and Plain.

Q:Is customization available?

Yes, we offer flexible customization from samples or designs, including full customization options.