What is the delivery time for orders?

Normally, delivery takes 30-40 days. Customized samples can be prepared within 15 working days.

What is the minimum order quantity?

The minimum order quantity is 1 Kg.

Are you an ISO certified manufacturer?

Yes, we are an ISO-certified fastener manufacturer established in 2009 with comprehensive R&D and quality assurance capabilities.

Premium Quality Square Washers for Wood Construction Projects

Name: Premium Quality Square Washers for Wood Construction Projects
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2200191885

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 Washers

Material

Brass

Model NO.

DIN 436

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Name

Square 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 436 Standard Compliance: Heavy-duty square washers designed specifically for wood constructions meeting DIN 436 standards.

Flexible Customization Options: Full customization available from samples or designs including standards, finishes, and sizes.

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

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

ISO Certified Manufacturer: Established in 2009 with vertically integrated production and rigorous quality assurance protocols.

Free Sample Availability: 1-3 pcs of standard specification samples available free of charge with express shipping options.

Global Market Experience: Serving clients across North America, Europe, Asia, and other regions for over 15 years.

Low Minimum Order Quantity: Accepts orders starting from 1 Kg, suitable for small batch and prototype needs.

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 standards do your square washers meet?

Our heavy-duty square washers are designed specifically for wood constructions and meet the DIN 436 standard.

Q:What materials are used for these washers?

We use carbon steel and stainless steel as the base materials for our washers.

Q:Can I customize the size and finish of the washers?

Yes, we offer full customization. Sizes follow reference standards or customer requirements, and finishes include Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, Black Oxide, and Plain.

Q:Do you provide free samples?

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

Q:What are your payment terms?

Standard terms are 30% T/T deposit with 70% balance against Bill of Lading copy. For orders under $1,000 USD, full advance payment is recommended. We also accept SWIFT, LC, D/P, PayPal, and Western Union.