What payment methods do you accept?

We accept T/T, L/C, D/P for general orders, and PayPal and Western Union for small or sample orders.

Do you provide quality certificates?

Yes, we provide Material Test Certificates (MTC) and mill certificates for every production link.

What is your minimum order quantity?

We accept orders of any size and maintain stock for various fasteners.

Carbon Steel Bolts with Zinc Coating

Name: Carbon Steel Bolts with Zinc Coating
Brand: Ningbo Steel Bolt Co., Ltd
SKU: 2115966405

Zhejiang, ChinaNingbo Steel Bolt Co., Ltd

US$0.10-1.00

1,000 Pieces

Product profile

Customization

Available

Material

Steel

Surface Finishing

Zinc Plated

Model NO.

ASTM A320

Grade

4.8, 6.8, 8.8, 10.9, 12.9

Certification

ISO

Customized

Studs Type

Metric Studs B1=1.25D

Finish

Zinc

Application

Industry

Customized Support

OEM

Surface Treatment

Black Oxide

Transport Package

Carton

Specification

M6-M100

Trademark

ningbo-bolt

Origin

Ningbo, China

Production Capacity

100000 Piece/Pieces Per Month

Key features

Comprehensive Grade Range: Available in grades 4.8, 6.8, 8.8, 10.9, and 12.9 for diverse strength requirements.

Lifetime Warranty Support: Covers mechanical defects with free parts and labor for the entire product life.

ISO Certified Quality: Strict quality control under ISO9001 system ensures 100% qualified products.

Flexible Customization: Offers full customization, minor customization, and design-based options.

Material Test Certificates: Provides MTC and mill certificates upon completion of every production link.

Fast Delivery for Stock: Goods in stock delivered within 15 days; larger quantities take 25-35 days.

OEM/ODM Services: Accepts OEM and ODM orders with support for custom designs and samples.

Free Sample Policy: New customers get free standard samples (client pays express); old customers get full free samples.

Company profile

High Repeat Buyers Choice

Ningbo Steel Bolt Co., Ltd

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 6 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤15h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier and operates as a combined company involved in producing and selling fasteners, hardware products, auto parts, and oil pipeline fittings. It supports extensive product customization, including samples, designs, full customization, minor customization, and flexible customization. The supplier reports two production lines and one presence in a main export market, with an average lead time of one month in both peak and off-season periods. However, it lacks 3D software design services, SDK availability, in-stock capacity, overseas warehouses, overseas agents or branches, and offline trade-show participation. Finished products are checked by packing staff, while no written procedures or records are used for assessing service capability. The provided information does not establish certifications, financial strength, after-sales performance, or customer case history.

Supplier typeThe supplier is explicitly identified as a professional technical supplier. It is a combined company whose stated business scope includes production and sales of fasteners, hardware products, auto parts, and oil pipeline fittings, as well as related import and export activities.

R&D capabilityThe supplier is identified as having professional technical research and development capability, and it offers multiple forms of customization. However, it explicitly does not provide 3D software design services and has no available SDK, so the evidence supports technical customization but not broader digital or software innovation capability.

Production capacityThe supplier reports two production lines, one-month average lead times in both peak and off-season, and six years of exporting experience. Countervailing controls are limited: finished products are checked by packing staff, there is no continuous quantity reconciliation for each batch or production run, no outsourcing SOP, no valid manufacturing-capacity contract with related subcontractors, and no in-stock capacity.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. This is direct evidence of broad product-design and modification capability, although 3D software design services are not available.

Product Q&A

Q:What grades are available for these bolts?

We offer grades 4.8, 6.8, 8.8, 10.9, and 12.9 to meet various strength needs.

Q:Do you provide a warranty?

Yes, we provide lifetime warranty support for all mechanical defects.

Q:Can I get free samples?

New customers receive free standard samples (client covers express charges), while old customers receive free samples with express charges paid by us.

Q:What is the delivery time?

Stock items are delivered within 15 days, while larger quantities take 25-35 days.

Q:Do you accept OEM and ODM orders?

Yes, we accept OEM and ODM services, including customization from samples and designs.