What are the payment terms?

Standard terms are 30% T/T deposit with 70% balance against B/L copy. We also accept LC, D/P, PayPal, and Western Union.

How long is the delivery time?

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

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 and salt spray tests.

Premium Curved Spring Washers DIN 6904 for Strong Fastening

Name: Premium Curved Spring Washers DIN 6904 for Strong Fastening
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2192136275

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

Service

Customized OEM ODM

Sample

Availabe

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 OEM/ODM services with customization from samples or designs.

Diverse Finishes: Available in Zinc Plated, Hot Dip Galvanized, Dacromet, and more.

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

Free Sample Offer: Provides 1-3 free standard samples, cost refundable on bulk order.

Low MOQ: Minimum Order Quantity is just 1 Kg for flexible purchasing.

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

Global Supply Chain: Serves 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.