What are the payment terms?

Standard terms are 30% T/T deposit and 70% balance against Bill of Lading copy. For orders under $1,000 USD, full advance payment is recommended. LC at sight and other methods are also accepted.

What quality assurance measures do you have?

We implement a two-stage QA protocol: pre-production sampling with dimensional verification and full batch inspection including torque testing, salt spray analysis, and material certification.

Where is the company located?

Ningbo Yinzhou Sokun Import & Export Co., Ltd. is located in Ningbo, China, a major port city with excellent transportation infrastructure.

Heavy-Duty Printed Steel Lock Washers for Long-Lasting Performance

Name: Heavy-Duty Printed Steel Lock Washers for Long-Lasting Performance
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2191891855

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 9

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

Customizable Standards: Supports GB, DIN, ISO, and JIS standards for global compatibility.

Flexible Customization: Offers customization from samples, designs, or full custom requirements.

Durable Finishes: Available in Zinc Plated, Hot Dip Galvanized, Dacromet, and Nickel Plated.

ISO Certified Quality: Manufacturer holds ISO certification with rigorous two-stage QA protocols.

Free Sample Availability: Provides 1-3 free standard samples with cost refundable on bulk orders.

Low MOQ: Minimum Order Quantity is only 1 Kg, suitable for small batches.

Fast Delivery: Standard delivery time is 30-40 days with prototyping in 15 days.

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

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 customization options are available?

We offer flexible customization including from samples, designs, and full customization. Standards such as GB, DIN, ISO, and JIS are supported.

Q:What materials and finishes are used?

Materials include carbon steel and stainless steel. Finishes available are Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, Black Oxide, and Plain.

Q:What is the Minimum Order Quantity (MOQ)?

The Minimum Order Quantity is 1 Kg, allowing for small batch orders.

Q:How long is the delivery time?

Standard delivery time is normally 30-40 days. Customized samples can be prepared within 15 working days.

Q:Can I get free samples?

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