What quality certifications do you have?

We follow strict quality control measures under the ISO9001 system, ensuring all products are 100% qualified with lifetime warranty support.

Can the packaging be customized?

Yes, our standard packaging is 20-25kg per carton, but customized options are available upon request.

What is the warranty period?

We provide lifetime warranty support for all our products as part of our quality guarantee.

Heavy Hex Nuts for Construction Projects

Name: Heavy Hex Nuts for Construction Projects
Brand: Ningbo Steel Bolt Co., Ltd
SKU: 2116309265

Zhejiang, ChinaNingbo Steel Bolt Co., Ltd

US$0.10-1.00

1,000 Pieces

Product profile

Customization

Available

Material

Steel

Standard

ASTM

Model NO.

A194

Grade

4 6 8

System of Measurement

Metric

Product Name

Hex Nut

Measurement System

Metric

Finish

Zinc/Black Plated/HDG

Application

General Industry

Origin

Zhejiang, China

Production Capacity

100000 Piece/Pieces Per Month

Key features

OEM/ODM Services: Full customization, minor customization, and flexible customization available from samples or designs.

ISO9001 Quality Control: Strict quality measures ensure 100% qualified products with lifetime warranty support.

Fast Delivery: Stocked items delivered within 15 days; larger quantities take 25-35 days.

Free Samples: New customers get free standard samples (client pays express); old customers get free samples (supplier pays).

Flexible Order Acceptance: Accepts orders of any size with maintained stock for various fasteners.

Certified Quality: Provides MTC and mill certificates upon completion of every production link.

Competitive Pricing: High-quality products offered at competitive prices with direct credit guarantees.

Customizable Packaging: Standard 20-25kg per carton with customized packaging options available upon request.

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: ≤11.65h

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 OEM and ODM services available?

Yes, we offer OEM/ODM services including full customization, minor customization, and flexible customization from samples or designs.

Q:What is the delivery time for orders?

Stocked items can be delivered within 15 days, while larger quantities may take 25-35 days.

Q:Do you provide free samples?

New customers can receive free standard fastener samples with client-covered express charges. Old customers receive free samples with express charges covered by us.

Q:What are the payment terms?

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

Q:Is there a minimum order quantity?

We accept orders of any size and maintain stock for various fasteners, so there is no strict minimum order requirement.