Is customization available?

Yes, we offer flexible customization from samples, designs, or full customization. Sizes are according to customer requirements.

What quality assurance measures do you have?

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

What is the warranty period?

We provide a comprehensive 2-year warranty for all our mechanical equipment.

Extra Large Timber Washers with Square Hole for DIN 440

Name: Extra Large Timber Washers with Square Hole for DIN 440
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2200188405

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 Hole Washers

Material

Brass

Model NO.

DIN 440

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Name

Square Hole 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 440 Compliance: Precision washers designed to meet DIN 440 standards for timber constructions.

Customizable Sizes: Sizes are determined by customer requirements and reference standards.

Multiple Finish Options: Available in Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, and Black Oxide.

ISO Certified Manufacturer: Established in 2009, we are an ISO-certified fastener manufacturer with R&D capabilities.

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

Flexible Customization: Offers flexible customization from samples, designs, or full customization services.

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

Global Market Reach: Serves global markets including North America, Europe, Australia, Asia, and the Middle East.

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.