Can I get free samples before placing an order?

Yes, we provide 1-3 free standard samples. Sample costs are refundable upon bulk order confirmation.

What are the payment terms?

Standard terms are 30% T/T deposit with 70% balance against B/L copy. LC at sight is also acceptable for bulk orders.

What quality certifications does the manufacturer hold?

We are an ISO-certified manufacturer with a rigorous two-stage quality assurance protocol including material certification.

Precision Engineered DIN 1440 Washers for Bolts and Fasteners

Name: Precision Engineered DIN 1440 Washers for Bolts and Fasteners
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2199956645

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

Plain Washers

Material

Brass

Model NO.

DIN 1440

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Name

Plain 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 1440 Standard Compliance: Precision engineered medium type washers strictly adhering to DIN 1440 standards for bolts and fasteners.

ISO Certified Manufacturer: Established in 2009, ISO-certified factory with comprehensive R&D and vertically integrated production facilities.

Flexible Customization Options: Offers full customization from samples or designs, including standards, finishes, and specific requirements.

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

Wide Material & Finish Range: Available in carbon steel and stainless steel with finishes like Zinc Plated, Hot Dip Galvanized, and Dacromet.

Free Sample Availability: Provides 1-3 free standard samples with express shipping options and prototyping services within 15 days.

Low Minimum Order Quantity: Supports small batch orders with a minimum order quantity of just 1 Kg for flexible purchasing.

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: ≤5.09h

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.