How do you ensure quality control?

Our QC team inspects every production link for each batch of goods. Additionally, we provide Material Test Certificates (MTC) and mill certificates upon completion of the goods.

Do you offer free samples?

New customers can receive free samples of standard fasteners, with express charges covered by the client. Returning customers will receive free samples with express charges paid by us.

Do you accept small orders?

Yes, we welcome all orders, maintaining a significant stock of various fasteners and offering quick production for specific products.

What is your delivery time?

Typically, if the goods are in stock, we can deliver within 15 days. For larger quantities, delivery may take 25-35 days.

How do you pack your products?

Our standard packing involves 20-25kg cartons, with 36 or 48 cartons per pallet. Customized packaging with logos or specific requirements is also available.

What are your accepted payment methods?

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

Durable Black Oxide Coated Hex Screws

Name: Durable Black Oxide Coated Hex Screws
Brand: Ningbo Steel Bolt Co., Ltd
SKU: 2118137515

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

Black Oxide Finish: Provides durable corrosion resistance with a professional black appearance.

Custom Standard Compliance: Manufactured to meet specific custom standard requirements for diverse applications.

OEM/ODM Services: Accepts OEM and ODM orders with flexible customization options from samples or designs.

ISO9001 Quality System: Adheres to strict ISO9001 quality management from raw materials to finished products.

Lifetime Warranty Support: Offers lifetime warranty coverage for all mechanical defects and quality issues.

Material Test Certificates: Provides MTC and mill certificates for every batch to ensure traceability and quality.

Flexible Packaging Options: Standard cartons available with customized packaging including logos and specific requirements.

Fast Delivery for Stock Items: Delivers stock items within 15 days, with 25-35 days for larger quantities.

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?

The Ningbo Steel Bolt Co., Ltd is a manufacturer of fasteners with extensive experience in producing Bolts, Nuts, Threaded Rods, and Washers in Ningbo, China.

Q:Do you provide OEM/ODM services?

Yes, Ningbo Bolt accepts OEM/ODM orders.

Q:How do you guarantee quality?

Ningbo Bolt adheres to strict quality control measures from raw materials to finished products, following the ISO9001 quality management system. We ensure that all products are 100% qualified and offer lifetime warranty support.

Q:How can I trust you?

Ningbo Steel Bolt Co., Ltd is a reputable fasteners factory in China, recognized as a Gold member on *** and Made in China. We have credit guarantees from *** Group, allowing you to place orders directly through ***.

Q:What about your pricing?

We offer high-quality products at competitive prices. Simply inquire with Ningbo Bolt, and we will promptly provide you with a price quote.