Can fasteners be packed separately with clear labels?

Yes. Fasteners can be packed by item, size, or project, with clear labeling for easy identification and site use.

Do you provide material certificates or inspection records?

Yes. Material certificates and inspection records are available upon request. Our quality system is ISO 9001 certified.

How soon can you respond after receiving our list or drawings?

We usually respond with technical feedback or quotation within 24 hours after receiving your information.

Large Width Black Oxide Hex Bolts for Heavy-Duty Use

Name: Large Width Black Oxide Hex Bolts for Heavy-Duty Use
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2274224745

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

US$0.10

1,000-4,999 Pieces

US$0.09

5,000-9,999 Pieces

US$0.08

10,000-49,999 Pieces

US$0.06

50,000+ Pieces

Product profile

Customization

Available

Material

Stainless Steel

Type

Hexagon Head

Model NO.

GB T 32076.3 - 2015

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

4.8/6.8/8.8/10.9/12.9

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Passivation, Zinc Plating, Black, Plainhdg, Yellow

Standards

DIN912

Finished

Passivation, Zinc Plating, Black, Plainhdg, Yellow

Certificate

ISO9001

Selling Units

Building, Industry, Machinery

Package

Customer'require

Delivery Time

15-30

Name

Black Oxide Hex Bolt

Service

Customized OEM ODM Service

Quality

Top High

Transport Package

Cartons & Pallets or According to Customer''s Requ

Specification

Allen Bolt

Trademark

SOKUN

Origin

Zhejiang

HS Code

7318150000

Production Capacity

100000000

Key features

Structural Preloading Design: Compliant with GB 32076.3 for reliable performance under high stress in construction and heavy machinery.

Enhanced Clamping Force: Hexagon bolt with large width across flats provides enhanced contact area and stable clamping force.

Custom OEM/ODM Service: Supports custom lengths, diameters, and thread specifications with made-to-order manufacturing.

Strict Quality Inspection: Each batch undergoes strict inspection for hardness, thread gauging, and surface quality.

Wide Grade Range: Available in grades 4.8, 6.8, 8.8, 10.9, and 12.9 to meet diverse strength requirements.

Multiple Finish Options: Offers Passivation, Zinc Plating, Black, Plain, and Yellow finishes for corrosion resistance.

ISO 9001 Certified: Manufacturing process is ISO 9001 certified ensuring consistent quality and reliability.

Mixed Order Support: Experienced in handling mixed fastener lists for engineering and project orders in one shipment.

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:Do you support custom and non-standard fasteners?

Yes. We specialize in non-standard fasteners manufactured according to drawings, samples, or technical requirements, with tolerance control applied.

Q:Can you supply mixed fasteners based on a BOM or item list?

Yes. We are experienced in handling mixed fastener lists for engineering and project orders. Different items can be combined in one order and one shipment.

Q:What information is required for quotation?

You can send us your BOM list, drawings (PDF / CAD / STEP), or samples. We review items one by one and provide a clear quotation.

Q:Do you accept small or medium batch orders?

Yes. We support prototype, small and medium batch production, especially for custom and non-standard fasteners.

Q:How do you ensure quality for mixed and custom orders?

Each item is inspected during production and before packing. Our quality system ensures accuracy and consistency for mixed fastener orders.