Where is your factory located?

Our factory is located in Shenzhen City, Guangdong Province, China.

Do you offer surface treatments for corrosion resistance?

Yes, we provide multiple types of anti-corrosion surface treatments for our fasteners. Cold galvanizing,hot-dip galvanizing,mechanical galvanizing,Dacromet, Magni,Geomet,Nickel plating,chrome plating,blackening,phosphating treatment,passivation,electrophoresis,anodizing.

What industries can these fasteners be used in?

They are widely used in new energy, steel structures, engineering machinery, ship parts, and chemical pipelines.

High Strength Hex Head Nuts, 8.8 12.9 Grade, Black Oxide / HDG Hot DIP Galvanized, Full Thread Half Thread HDG Hexagon Fastener Bolt

Name: High Strength Hex Head Nuts, 8.8 12.9 Grade, Black Oxide / HDG Hot DIP Galvanized, Full Thread Half Thread HDG Hexagon Fastener Bolt
Brand: Shenzhen Taishengda Hardware Products Co., Ltd.
SKU: 2308763225

Guangdong, ChinaShenzhen Taishengda Hardware Products Co., Ltd.

US$1.00

1 Piece

Product specifications

Metric DIN/ISO/GB

ANSI/UNC/UNF

ASTM A325/A490

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Type

Hexagon Head

Model NO.

F-031

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

12.9

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Black

Material 1

Stainless Steel SS304

Material 2

Stainless Steel SS316

Material 4

Stainless Steel SS316L

Material 3

Alloy Steel Carbon Steel

Application 1

Photovoltaic and Wind Power New Energy

Application 2

Furniture, Hardware, Doors and Windows, Bathroom

Application 3

Electronic Equipment, Instrument Equipment

Application 4

Agricultural Machinery, Automatic Machine Tools

Transport Package

Plastic Bag Cardboard

Specification

30X30X25CM

Trademark

TSD

Origin

Shenzhen

HS Code

7318190000

Production Capacity

15000000pieces/Year

Key features

Multiple surface treatments: hot-dip galvanizing/electroplating galvanizing/Dacromet/blackening/stainless steel polishing.

High strength grade: 4.8/8.8/10.9/12.9 alloy steel, resistant to tensile stress and not easily broken.

Highlights: Precision rolled threads, repeated disassembly and assembly without slipping, metric and imperial full specifications, screws, nuts, and washers shipped as a complete set.

Improve quality control system: 12 factory inspections, including hardness testing, tensile load testing, salt spray corrosion testing, and thread accuracy testing.

Company profile

Fast DeliveryQuality AssuranceQA/QC InspectorsStandardized quality control

Shenzhen Taishengda Hardware Products Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2012-12-02Nearest Port: shenzhen, Hong KongAverage Response Time: ≤9.98hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CIF

AI-Powered supplier vetting

SummaryShenzhen Taishengda Hardware Products Co., Ltd. demonstrates established hardware manufacturing capabilities, ISO9001:2015 certification, quality assurance, inventory capacity, and stated OEM/ODM services. It supports minor customization and sample-based customization, with stated peak- and off-season lead times within 15 workdays. However, the evidence also shows limited formal systems and international infrastructure: no written records for supplier-service assessment, corrective actions, or complaint handling; no material traceability; no overseas warehouse, showroom, agent, or branch; and no valid manufacturing-capacity contract with related subcontractors. Innovation evidence is mixed, with a stated professional R&D team and ODM capability but only one R&D engineer, no new products in the past year, no 3D software design service, and no SDK.

Supplier typeThe supplier is explicitly identified as not being a professional technical supplier, while its company description presents a hardware-products manufacturer with R&D and design support, mold and clamping-tool development, and manufacturing capabilities. This indicates a manufacturing-oriented hardware supplier rather than a specialized technical-services provider.

CertificationsThe supplier states that it has passed the ISO9001 international quality management system certification and specifically holds an ISO9001:2015 certificate. This is explicit evidence of a relevant management-system certification.

R&D capabilityInnovation evidence is mixed: the company describes a professional R&D and design team and offers ODM services, but it has only one R&D engineer, reported no new products in the past year, provides no 3D software design service, and has no available SDK. These explicit limitations prevent a positive assessment of innovation strength.

Production capacityThe supplier lists CNC, aluminum extrusion, punching, hardware chassis, and stamping production, supported by cutting, CNC machining, hydraulic pressing, punching, and tapping equipment. It reports inventory capacity and lead times within 15 workdays in both peak and off-season, but has no valid capacity contract with related subcontractors and no formal written supplier-capability assessment records.

Customization capabilityThe supplier explicitly provides minor customization and customization from samples, and also states that it offers ODM services and OEM services for popular brands. The evidence supports customization availability, although it does not establish advanced or fully independent design capability.