How long is the delivery time?

Normally, delivery takes 30-40 days. Peak season lead time is one month, while off-season is also one month.

Are free samples available?

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

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, salt spray analysis, and material certification.

Premium Spring Lock Washers for Enhanced Industrial Efficiency

Name: Premium Spring Lock Washers for Enhanced Industrial Efficiency
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2192222395

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, and JIS standards for global compatibility.

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

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

Free Sample Policy: Provides 1-3 free standard samples with cost refundable on bulk orders.

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

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

Fast Prototyping: Customized samples can be produced within 15 working days.

Global Delivery: Standard delivery time is 30-40 days via major ports like Shanghai and Ningbo.

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 is the minimum order quantity?

The Minimum Order Quantity (MOQ) is 1 Kg.

Q:Can the washers be customized?

Yes, we offer flexible customization including from samples, designs, and full customization. Standards like GB, DIN, ISO, and JIS are supported.

Q:What materials are used for these washers?

The washers are made from Carbon steel and Stainless steel.

Q:What surface finishes are available?

Available finishes include Zinc Plated, Hot Dip Galvanized Steel, Dacromet, Nickel Plated, Black Oxide, and Plain.

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. LC at sight is also acceptable for bulk orders.