How do you ensure product quality?

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

What materials are used for these washers?

Our precision curved spring lock washers are primarily made from carbon steel and stainless steel, with options for brass depending on specific requirements.

Where is your company located?

We are located in Ningbo, a major port city in China, with a plant area of 1927 square meters and over 15 years of export experience.

High-Quality Zinc-Plated Spring Lock Washers for Heavy-Duty Use

Name: High-Quality Zinc-Plated Spring Lock Washers for Heavy-Duty Use
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2192223995

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

Spring Washers

Material

Brass

Model NO.

DIN 128

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Name

Spring 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: Supports GB, DIN, ISO, JIS standards for global compliance.

Flexible Customization: Offers customization from samples, designs, or full custom requirements.

Diverse Finishes: Available in Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, and Black Oxide.

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

Rigorous Quality Control: Implements pre-production sampling and full batch inspection including torque and salt spray tests.

ISO Certified Manufacturer: Established in 2009, specializing in precision fasteners and solar mounting systems.

Low MOQ: Minimum Order Quantity starts at just 1 Kg for flexible purchasing.

Fast Delivery: Standard delivery time is 15-30 days, with peak season lead time of one month.

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.

Product Q&A

Q:What customization options are available?

We offer flexible customization including from samples, designs, and full customization. Standards can be GB, DIN, ISO, or JIS, and finishes include Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, and Black Oxide.

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

The minimum order quantity is 1 Kg, allowing for flexible purchasing for small or large orders.

Q:Can I get free samples before placing an order?

Yes, we provide 1-3 free standard specification samples. Sample costs are refundable upon bulk order confirmation. Express shipping is available via DHL, UPS, or FedEx at the customer's account.

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

Q:What is the typical delivery time?

Standard delivery time is normally 15-30 days. During peak seasons, the lead time is approximately one month, while off-season lead time is also about one month.