What is your standard packaging?

Standard packaging is 20-25 kg per carton, with 36 or 48 cartons per pallet (approx. 900-960 kg). Custom packaging is also available.

Are you a verified manufacturer?

Yes, we are a verified supplier on Made-in-China with ISO9001 certification, ensuring we are a legitimate and reliable manufacturer.

Can I visit your factory?

Of course. We welcome factory visits. Please contact us in advance to arrange transportation from the airport or train station.

HDG Galvanized Heavy Hex Bolt ASTM A325m A490 Structural Bolts for Buildings

Name: HDG Galvanized Heavy Hex Bolt ASTM A325m A490 Structural Bolts for Buildings
Brand: Bolnut Fastener Co., Ltd
SKU: 2243470365

Jiangsu, ChinaBolnut Fastener Co., Ltd

US$0.10

1 Piece

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

ASTM A325/ASTM A490

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, BSW

Grade

A2-70

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Zinc, Plain, Black, Hot Dipped Galvanized

MOQ

10000 Pieces

Thread

Metric

Name

Heavy Hex Structutal Bolts

Certificate

ISO9001

Transport Package

20-25kg/Carton+900kg Pallet

Specification

M2-M36

Trademark

BNT

Origin

China

HS Code

731815

Production Capacity

1000ton/Month

Key features

Custom Logo & Design: We accept custom logos and designs on products and packaging based on your specifications.

Free Samples Available: Free samples provided for standard fasteners under 1kg; existing customers get free express shipping.

Flexible Lead Time: Delivery takes 10-15 days in slack season and 15-30 days in busy season for custom orders.

Wide Material Selection: Available in Carbon Steel, Stainless Steel (304, 316, etc.), and various grades from 4.8 to 12.9.

Multiple Finishing Options: Options include Zinc, HDG, Black Oxide, Geomet, Dacroment, Nickel plated, and Anodization.

Professional Manufacturing: Cold/Hot forging and CNC machining for M2-M100 sizes with rigorous quality assurance protocols.

Secure Payment Terms: Standard 30% T/T deposit, 70% before shipping; also accepts L/C, D/P, PayPal, and Western Union.

Verified Supplier: Verified on Made-in-China with ISO9001 certification and a decade of industry expertise.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceFast Delivery

Bolnut Fastener Co., Ltd

Jiangsu, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 13 YearsNearest Port: SHANGHAI , NINGBO ,ZHAPU , SHENZHEN, TIANJINGAverage Response Time: ≤0.96h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company in Zhangjiagang, Suzhou, with business scopes covering labor protection products, apparel, textiles, communication equipment, electronics, and certain medical protective products. It is described as a professional technical supplier and offers multiple customization modes, ODM services, and OEM services for popular brands. However, it has only one R&D engineer, launched no new products in the past year, and does not provide 3D software or SDK services. Service procedures and complaint-handling procedures exist, but supplier approval records are incomplete. Financial information is represented only by reporting years, without performance values. No overseas warehouse, showroom, overseas branch or offline trade-show participation is reported.

Supplier typeThe supplier is explicitly classified as a trade company, while its stated scope includes labor protection products, apparel, textiles, medical protective equipment, communication equipment, and electronic products. It is also identified as a professional technical supplier, indicating a trading-oriented business with technical and customization support rather than confirmed manufacturing status.

After-Sales capabilityThe supplier has a clear complaint-handling procedure with followed records, and it has a corrective and preventive action mechanism with implementation records. However, its general service-assessment procedure has no records, and its approved-supplier list lacks approval signatures or dates, indicating documented but incompletely controlled service processes.

R&D capabilityThe supplier is identified as a professional technical supplier and offers ODM services, but it has only one R&D engineer, launched no new products in the past year, and lacks both 3D software design and SDK capabilities. This shows some technical development and design support, but limited demonstrated innovation output and digital R&D capability.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services, directly evidencing broad customization and design-manufacturing support.

Client casesA repeat-buyer preference of 50%–80% is reported, and the supplier states that it provides OEM services for popular brands. These are positive customer-related indicators, but no named customers, specific projects, order examples, or independently verifiable case details are provided.

Product Q&A

Q:Can I get a catalog or price list?

Yes, please provide your email address, and we will send the catalog and price list within two working hours.

Q:Do you offer free samples?

Yes, free samples are available for standard fasteners under 1kg. For existing customers, we also cover the express charges.

Q:What is the delivery time for orders?

Stock items deliver in 2-5 days. Custom orders take 10-15 days in slack season and 15-30 days in busy season. Large orders (1-2 containers) take 18-25 days.

Q:What are your payment terms?

We accept 30% T/T deposit and 70% before shipping. Other methods include L/C, D/P, PayPal, and Western Union.

Q:Can you customize products with my logo?

Yes, we accept custom logos and designs on both products and packaging, tailored to your specific requirements.