Do you provide free samples?

Yes, free samples (1-3 pcs of standard specification) are available. Express shipping costs (DHL/UPS/FedEx) are borne by the customer, but sample costs are refundable upon bulk order confirmation.

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. We also accept LC at sight, PayPal, and Western Union.

What quality assurance measures do you take?

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

Heavy-Duty Square Taper Washers for Steel I Beams

Name: Heavy-Duty Square Taper Washers for Steel I Beams
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2191872055

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

Beveled Washers

Material

Brass

Model NO.

DIN 6917

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Name

Beveled 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 6917 Standard Compliance: Square taper washers strictly adhere to DIN 6917 standard for structural bolting of steel I sections.

Flexible Customization Options: Offer full customization from samples or designs, including size, finish, and standards (GB, DIN, ISO, JIS).

Multi-Material Selection: Available in carbon steel and stainless steel with various finishes like zinc plating, hot dip galvanized, and Dacromet.

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

Free Sample Availability: Free standard samples (1-3 pcs) available with express shipping via DHL/UPS/FedEx at customer's account.

Low Minimum Order Quantity: Flexible MOQ starting from just 1 Kg, suitable for both small trials and large industrial orders.

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

Fast Delivery Time: Standard delivery within 30-40 days, with prototyping services for customized samples within 15 working days.

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: ≤4.49h

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 these washers comply with?

The square taper washers comply with the DIN 6917 standard, designed specifically for the structural bolting of steel I sections.

Q:What materials and finishes are available?

Materials include carbon steel and stainless steel. Finishes available are Zinc Plated, Hot Dip Galvanized Steel, Dacromet, Nickel Plated, Black Oxide, and Plain.

Q:Can I customize the size and specifications?

Yes, we offer flexible customization. Sizes are based on standards and customer requirements. We support customization from samples, designs, and full customization.

Q:What is the minimum order quantity (MOQ)?

The minimum order quantity is 1 Kg, allowing for flexible ordering for both small and large projects.

Q:How long is the delivery time?

Standard delivery time is normally 30-40 days. For customized samples, prototyping takes within 15 working days.