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, full advance payment is recommended. We also accept LC, D/P, PayPal, and Western Union.

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 your company's manufacturing capability?

We are an ISO-certified manufacturer established in 2009/2010, with 41 employees, a 1927 sqm plant, and 15 years of export experience, serving global markets.

Premium Square Taper Washers for Heavy-Duty Steel Bolting

Name: Premium Square Taper Washers for Heavy-Duty Steel Bolting
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2199881625

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

Customizable Standards: Available in GB, DIN, ISO, and JIS standards to meet diverse international requirements.

Flexible Customization: Supports customization from samples, designs, and full customization options.

Multiple Finishes: Offers Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, and Black Oxide finishes.

ISO Certified Quality: Manufactured under ISO certification with rigorous two-stage quality assurance protocols.

Free Sample Availability: Provides 1-3 free standard samples with express shipping via DHL/UPS/FedEx.

Low MOQ: Minimum Order Quantity is only 1 Kg, suitable for small batch testing.

Global Shipping: Located in Ningbo with access to Shanghai and Ningbo ports for efficient export.

Fast Delivery: Standard delivery time is 15-30 days for customized orders.

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: ≤5.81h

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 are available for these washers?

We provide washers conforming to GB, DIN, ISO, and JIS standards.

Q:Can I customize the size or finish?

Yes, we offer flexible customization from samples, designs, and full customization. Sizes follow standards or customer requirements, with finishes like Zinc Plated, Hot Dip Galvanized, and Dacromet.

Q:What is the minimum order quantity?

The Minimum Order Quantity is 1 Kg.

Q:How long does delivery take?

Standard delivery time is 15-30 days. Peak season lead time is one month, while off-season is also one month.

Q:Are free samples available?

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