How do you pack your products?

Products are packed in 20-25kg cartons, with multiple cartons on a pallet. Customized packaging with logos is available upon request.

Do you accept small orders?

Yes, we accept orders of any size, with a wide range of fasteners in stock and quick production capabilities.

How do you control quality?

Our QC team inspects every production link for each batch of goods, providing MTC and mill certificates upon completion.

Industrial Strength Black Oxide Hex Bolts

Name: Industrial Strength Black Oxide Hex Bolts
Brand: Ningbo Steel Bolt Co., Ltd
SKU: 2121538245

Zhejiang, ChinaNingbo Steel Bolt Co., Ltd

US$0.10-1.00

1,000 Pieces

Product profile

Customization

Available

Material

Steel

Type

Hexagon Head

Model NO.

A307

Connection

Common Bolt

Head Style

Hexagonal

Standard

Custom

Grade

Grade a

Application

Machinery, Chemical Industry, Environmental, Building, Industry

Finish

Plain

Packing

Cartons+Plastic Bags

Surface Treatment

Black Oxide

Transport Package

Carton+Pallet

Specification

M6-M100

Trademark

ningbo-bolt

Origin

Zhejiang, China

Production Capacity

100000 Piece/Pieces Per Month

Key features

OEM/ODM Support: We accept OEM and ODM orders for customized fastener solutions.

ISO9001 Certified: Strict quality control adhering to ISO9001 with 100% qualified products.

Lifetime Warranty: All products come with lifetime warranty support for peace of mind.

Fast Delivery: Stock items delivered within 15 days; bulk orders in 25-35 days.

Free Samples: Free standard fastener samples available for new and old customers.

Flexible MOQ: We accept orders of any size, including small batch requirements.

Custom Packaging: Customized packaging with logos available upon request.

Multiple Payment: Supports T/T, L/C, D/P, PayPal, and Western Union payments.

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:Are you a manufacturer or trading company?

We are a manufacturer of fasteners with years of experience in producing Bolts, Nuts, Threaded Rods, and Washers in Ningbo, China.

Q:How do you guarantee quality?

We follow strict quality control measures from raw materials to finished products, adhering to the ISO9001 quality management system, ensuring all products are 100% qualified with lifetime warranty support.

Q:What is your delivery time?

Goods in stock 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 samples for standard fasteners, with express charges covered by the client. Old customers receive free samples with express charges covered by us.

Q:What are your payment terms?

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