What is the minimum order quantity?

The minimum order quantity is 1 Kg.

What is your quality assurance process?

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

Where are you located?

We are a precision manufacturing factory based in Ningbo, China, a strategic port city with world-class logistics.

Premium Stainless Steel Ball Plunger Spring Set for M3 M4 M5 Applications

Name: Premium Stainless Steel Ball Plunger Spring Set for M3 M4 M5 Applications
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2193962635

Zhejiang, ChinaNingbo Yinzhou Sokun Import and Export Co., Ltd.

US$0.01-0.10

10,000 Pieces

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Warranty

Model NO.

CNC PART

Condition

New

Certification

CE, RoHS, ISO9001

Standard

DIN, ASTM, GOST, GB, JIS, BS

Customized

Material

Alloy

Application

Metal Recycling Machine, Metal Cutting Machine, Metal Spinning Machinery, Metal Processing Machinery Parts, Metal forging Machinery, Metal Engraving Machinery, Metal Drawing Machinery, Metal Coating Machinery, Metal Casting Machinery

Finished

Passivation, Zinc Plating, Black, Plainhdg, Yellow

Certificate

ISO9001/SGS

Package

Customer'require

Delivery Time

15-30

Transport Package

Customization

Specification

customization

Trademark

customization

Origin

Zhejiang

HS Code

732690

Production Capacity

100000000

Key features

Comprehensive Certifications: Holds CE, RoHS, and ISO9001 certifications for global compliance.

Flexible Customization: Offers full customization from samples and designs with various finishes.

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

Fast Delivery Options: Standard delivery in 15-30 days with express shipping via DHL/UPS/FedEx.

OEM/ODM Support: Welcomes OEM and ODM inquiries for bespoke product manufacturing.

Rigorous Quality Control: Implements two-stage QA including pre-production sampling and full batch inspection.

Wide Application Range: Suitable for metal recycling, cutting, spinning, forging, and casting machinery.

Established Manufacturer: ISO-certified factory established in 2009 with 15 years of export experience.

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: ≤4.21h

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:Can you provide samples?

Free samples (1-3 pcs) are available for standard specifications. Customized samples take 15 working days. Sample costs are refundable upon bulk order confirmation.

Q:What are the payment terms?

Standard terms are 30% T/T deposit with 70% balance against Bill of Lading. For orders under $1,000, full advance payment is recommended. We also accept SWIFT, LC, PayPal, and Western Union.

Q:What is the delivery time?

Standard delivery time is 15-30 days. Lead times may vary during peak seasons (1-3 months) versus off-seasons (1 month).

Q:Do you offer customization services?

Yes, we offer flexible customization including finishes like passivation, zinc plating, and black, as well as full customization from samples or designs.

Q:What certifications do you have?

Our products and factory are certified with CE, RoHS, and ISO9001 standards.