What are your payment terms?

Our standard terms are 30% T/T as a deposit and 70% before shipping. We also accept L/C, D/P, PayPal, and Western Union.

How are the products packaged?

Standard packaging is 20-25 kg per carton with 36 or 48 cartons per pallet (approx. 900-960 kg). We can print customer logos or customize packaging.

Do you accept custom designs for boxes?

Yes, we accept customized designs for both products and packaging, supported by a professional design team.

How can I verify your company legitimacy?

We are verified suppliers on Made-in-China and undergo a rigorous certification process to ensure we are a legitimate manufacturer.

Can I visit your factory?

Of course. We welcome factory visits at any time. Please contact us beforehand to arrange transportation from the airport or train station.

High-Strength 12.9 Grade Black Carbon Steel Hex Bolts

Name: High-Strength 12.9 Grade Black Carbon Steel Hex Bolts
Brand: Bolnut Fastener Co., Ltd
SKU: 2210397495

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 /Stainless Steel

Type

Hexagon Head

Model NO.

DIN933

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, BSW

Grade

A2-70

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Plain, Black Zinc,Yellow Zinc Plated, Hdgv

MOQ

10000pieces

Thread

Metric

Name

Hex Bolt

Ceteficate

ISO9001

Transport Package

20-25kg/Carton+900kg Pallet

Specification

M4-M100

Trademark

BNT

Origin

China

HS Code

731815

Production Capacity

1000ton/Month

Key features

High-Strength Material Options: Available in Carbon Steel and Stainless Steel grades including SS304, SS316, and 12.9 Grade.

Comprehensive Customization: Full customization available from samples, designs, or minor adjustments with professional design team.

Free Sample Availability: Free samples provided for standard fasteners; express charges covered for existing customers.

Flexible Lead Time: 10-15 days during slack season and 15-30 days during busy season for customized products.

Wide Range of Finishes: Options include Zinc Plating, HDG, Black Oxide, Dacroment, and Nickel Plating.

Strict Quality Assurance: Rigorous durability testing and adherence to DIN, ASTM, ANSI, and ISO standards.

Competitive Pricing: Cost-effective solutions leveraging professional factory production capabilities.

Global Shipping Capability: Experienced in exporting to North America, Europe, Asia, and Africa via multiple ports.

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: ≤0.77h

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:How can I get the product catalog?

Please provide your email address, and we will send the catalog within two working hours.

Q:Are samples available and how much do they cost?

Yes, samples are free of charge for standard fasteners. We only ship weights under 1 kg. For existing customers, we also cover express charges.

Q:How can I obtain a price list?

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

Q:Can you add my own logo or design to the products?

Yes, we can accommodate custom logos or designs on the products without issue.

Q:What is the delivery time for orders?

Stock items can be delivered within 2-5 days. For 1-2 containers, it takes approximately 18-25 days. Orders exceeding two containers can be prioritized for expedited production.