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ASTM A320 Heavy Hex Bolts
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

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 to meet diverse strength requirements.
ISO Certified Quality: Manufactured under strict ISO9001 quality management system with 100% qualified guarantee.
Lifetime Warranty: Supports lifetime warranty coverage for all products against mechanical defects.
OEM/ODM Services: Full customization support including logo printing and custom carton design available.
Fast Delivery Options: Stock items delivered within 15 days; container orders completed in 25-35 days.
Free Sample Policy: Free samples provided for standard fasteners; shipping fees waived for returning customers.
Flexible Payment Terms: Accepts T/T, L/C, D/P, PayPal, and Western Union for various order sizes.
MTC and Certificates: Material Test Certificates and mill certificates provided upon completion of goods.

Company profile

Ningbo Steel Bolt Co., Ltd
High Repeat Buyers Choice
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:Are you a manufacturer or trading company?
A:
The Ningbo Steel Bolt Co., Ltd is a manufacturer of fasteners factory with many years of experience in Bolts, Nuts, Threaded Rods and Washers in Ningbo, China.
Q:Are OEM/ODM services provided?
A:
Yes, the Ningbo Bolt accepts OEM/ODM services.
Q:How to guarantee quality?
A:
We have strict quality control from raw materials to finished products according to the ISO9001 quality management system. We guarantee all products 100% qualified and support lifetime warranty.
Q:How do you let me trust you?
A:
The Ningbo Steel Bolt Co., Ltd is a fasteners factory in China with many years of production experience. We are a Gold member of Made in China and have credit guarantee from Made in China.
Q:How about your price?
A:
We offer high quality products with reasonable prices. Please send an inquiry, and the Ningbo Bolt will quote you a price immediately for your reference.

Send Inquiry

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