What is the Minimum Order Quantity (MOQ)?

The Minimum Order Quantity is very flexible, starting from just 1 Kg, making it suitable for both small trials and large industrial purchases.

How do you ensure product quality?

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

What is the warranty or after-sales service?

As an ISO-certified manufacturer with over 15 years of experience, we provide comprehensive after-sales service management and adhere to strict quality-driven development strategies to ensure product reliability.

High-Performance Conical Spring Belleville Washers for Bolted Connections

Name: High-Performance Conical Spring Belleville Washers for Bolted Connections
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2191887635

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

Disc Spring

Material

Brass

Model NO.

DIN 6796

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Selling Units

Building, Industry, Machinery

Package

Customer'require

Delivery Time

15-30

Name

Conical Spring Washer

Service

Customized OEM ODM

Sample

Availabe

Transport Package

Cartons & Pallets or According to Customer''s Requ

Specification

Trademark

SOKUN

Origin

Zhejiang

HS Code

7318150000

Production Capacity

100000000

Key features

DIN 6796 Standard Compliance: Manufactured strictly according to DIN 6796 standards for high-performance bolted connections.

Custom OEM/ODM Service: Flexible customization from samples or designs, including standards, finishes, and packaging.

Multi-Material Options: Available in carbon steel and stainless steel to meet diverse corrosion resistance needs.

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

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

Free Sample Availability: 1-3 pcs standard samples provided free of charge; cost refundable upon bulk order.

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

Low Minimum Order Quantity: Flexible MOQ starting from just 1 Kg, suitable for small batches and prototyping.

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 materials are available for these washers?

The washers are available in carbon steel and stainless steel, allowing selection based on specific strength and corrosion resistance requirements.

Q:Can I customize the specifications and finishes?

Yes, we offer flexible OEM/ODM services. You can customize standards (GB, DIN, ISO, JIS), finishes (Zinc, Galvanized, etc.), and packaging according to your requirements.

Q:What is the lead time for production?

Standard delivery time is typically 30-40 days. Lead times may vary slightly depending on the season, with peak season times ranging from one to three months.

Q:Do you provide free samples?

Yes, we provide 1-3 pieces of standard specification samples for free. You only need to cover the express shipping cost via DHL/UPS/FedEx, which is refundable upon placing a bulk order.

Q:What are the payment terms?

Standard terms are 30% T/T deposit with 70% balance against the Bill of Lading copy. For orders under $1,000 USD, full advance payment is recommended. LC at sight is also negotiable for bulk orders.