What is your quality assurance process?

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

What standards do your products meet?

Our products comply with standards such as DIN, GB, ISO, JIS, and ASTM. Specific sizes are referenced according to standards and customer requirements.

Durable DIN 435 Square Washers for Industrial Steel Use

Name: Durable DIN 435 Square Washers for Industrial Steel Use
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2191878375

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

Square Bevel Washers

Material

Carbon Steel

Model NO.

DIN 435 - 1989

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Name

Grooves Beveled Square Bevel Washers

Selling Units

Building, Industry, Machinery

Package

Customer'require

Delivery Time

15-30

Sample

Avaliable

Service

Customized OEM ODM

Transport Package

Cartons & Pallets or According to Customer''s Requ

Specification

Trademark

SOKUN

Origin

Zhejiang

HS Code

7318150000

Production Capacity

100000000

Key features

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

ISO Certified Manufacturer: Established in 2009 with ISO certification and rigorous quality assurance.

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

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

Global Market Reach: Serving clients in North America, Europe, Asia, and other global regions.

Flexible Payment Terms: Accepts T/T, LC, D/P, PayPal, and Western Union for various order sizes.

Fast Sample Prototyping: Customized samples can be produced within 15 working days.

Strict Quality Control: Includes dimensional verification, torque testing, and salt spray analysis.

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.

Product Q&A

Q:Can you provide a sample?

Free samples available (1-3 pcs standard specification). Express options: DHL/UPS/FedEx (customer's account). Prototyping service: Customized samples within 15 working days. Note: Sample cost refundable upon bulk order confirmation.

Q:What are the payment terms?

Standard terms: 30% T/T deposit with 70% balance against Bill of Lading copy. For orders under $1,000 USD, full advance payment is recommended. Acceptable instruments: SWIFT transfer, LC at sight.

Q:What is the delivery time?

Normally in 30-40 days. Peak season lead time is one month to three months, while off-season lead time is one month.

Q:What materials are available?

Carbon steel and stainless steel are available. Surface finishes include Zinc Plated, Hot Dip Galvanized Steel, Dacromet, Nickel Plated, Black Oxide, and Plain.

Q:Do you offer customization services?

Yes, we offer flexible customization, customization from samples, customization from designs, and full customization.