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Established in 2009, we are an ISO-certified fastener manufacturer and solar mounting system solutions provider headquartered in Ningbo, China. We serve global markets with expert engineering teams specializing in precision fastener development.

Premium Hexagon Nuts GB 56 for Heavy-Duty Industrial Use

Name: Premium Hexagon Nuts GB 56 for Heavy-Duty Industrial Use
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2246822105

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

US$0.01-0.10

10,000 Pieces

Product profile

Customization

Available

Material

Carbon Steel, Stainless Steel,Brass

Type

Hex Nuts

Model NO.

GB 56 - 1988

Connection

Head Style

Standard

DIN, ANSI, GB, JIS, GOST, BSW

Grade

Standards

GB, DIN, ISO, JIS

Finished

Passivation, Zinc Plating, Black, Plainhdg, Yellow

Certificate

ISO9001/SGS

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

Multi-Material Options: Available in Carbon Steel, Stainless Steel, Brass, Aluminum, and Titanium Alloys.

Customizable Dimensions: Sizes can be customized according to customer requirements and reference standards.

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

ISO Certified Manufacturer: Established in 2009 with ISO certification and comprehensive R&D capabilities.

Flexible Customization: Offers full customization from samples or designs with ODM services available.

Free Sample Availability: Provides 1-3 pcs of standard specification samples free of charge.

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

Global Market Experience: Serves clients in North America, Europe, Asia, and other regions 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: ≤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:Can you provide a sample?

Free samples available (1-3 pcs standard specification). Express options: DHL/UPS/FedEx (customer's account). Prototyping service: Customized samples within 15 working days. Note: Sample cost refundable upon bulk order confirmation.

Q:What are the payment terms?

Standard commercial terms: 30% T/T deposit with 70% balance payable against Bill of Lading copy. For orders under $1,000 USD, we recommend full advance payment. Acceptable payment instruments: SWIFT transfer, LC at sight (negotiable for bulk orders).

Q:What is your quality assurance system?

We implement a rigorous 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 container loading.

Q:What is the delivery time?

Normally in 30-40 days.

Q:What are your core product portfolios?

Our manufacturing expertise covers Industrial Fastening Solutions (Hex bolts, machine screws, locking nuts, etc.) and Solar Energy Installation Systems (Ground-mounted & rooftop solar racking systems, PV module mounting accessories).