Are free samples available?

Yes, free samples of standard specifications (1-3 pcs) are available. Express shipping costs are covered by the customer's account. The sample cost is refundable upon bulk order confirmation.

What quality assurance measures are in place?

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.

Heavy-Duty Square Washers for Woodwork - Compliant with DIN 436

Name: Heavy-Duty Square Washers for Woodwork - Compliant with DIN 436
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2200230045

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 Compliance: Premium square washers specifically designed for wood constructions, strictly adhering to DIN 436 standards.

Customizable Finish: Available in Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, Black Oxide, and Plain finishes.

Flexible Customization: Supports full customization from samples or designs, with sizes adjusted according to customer requirements.

ISO Certified Quality: Manufactured by an ISO-certified facility with rigorous two-stage quality assurance including salt spray analysis.

Low MOQ: Minimum Order Quantity is only 1 Kg, allowing for small batch testing and flexible procurement.

Free Sample Provision: Free standard samples (1-3 pcs) available, with sample cost refundable upon bulk order confirmation.

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: ≤6.02h

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 materials are used for these square washers?

The washers are primarily made from carbon steel and stainless steel to ensure durability and corrosion resistance.

Q:Can the size and finish be customized?

Yes, sizes are referenced to standards but can be adjusted according to customer requirements. Finishes include 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, which allows for flexible ordering for both small and large projects.

Q:What are the 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. LC at sight is also negotiable for bulk orders.

Q:How long is the delivery time?

Normally, delivery takes 30-40 days. During peak seasons, lead time may extend to one month or more, while off-season lead time is approximately one month.