What payment terms do you accept?

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

Is there a quality guarantee?

Yes, we maintain strict quality control under ISO9001 and provide lifetime warranty support with MTC certificates.

What is the minimum order quantity?

We welcome all orders and have ample stock available for various fasteners.

Black Oxide Hexagon Flange Head Screws

Name: Black Oxide Hexagon Flange Head Screws
Brand: Ningbo Steel Bolt Co., Ltd
SKU: 2116006305

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.

DIN7991

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN

Grade

8.8, 10.9, 12.9

Application

Machinery, Chemical Industry, Environmental, Building, Industry

Finish

Plain

Packing

Cartons+Plastic Bags

Head Type

Hexagon Flange Head

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

Diverse Grade Options: Available in Grade 8.8, 10.9, and 12.9 for various strength requirements.

Customizable Surface Treatment: Surface treatment can be customized, including Black Oxide finish.

OEM and ODM Services: Full customization from samples, designs, and flexible customization options available.

Lifetime Warranty Support: Comprehensive warranty support for all mechanical defects with strict quality control.

ISO9001 Certified Quality: Manufactured under ISO9001 system ensuring 100% qualified products with MTC certificates.

Flexible Delivery Time: In-stock items delivered within 15 days; larger quantities take 25-35 days.

Free Sample Availability: Free samples for standard fasteners available for new and existing customers.

Wide Application Scope: Suitable for Machinery, Chemical Industry, Environmental, Building, and general Industry.

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 screws?

We offer Grade 8.8, 10.9, and 12.9 to meet different strength requirements.

Q:Can the surface treatment be customized?

Yes, surface treatments like Black Oxide can be customized according to your requirements.

Q:Do you accept OEM and ODM orders?

Yes, we provide full customization from samples, designs, and flexible customization options.

Q:What is the delivery time for orders?

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

Q:Are free samples available?

Yes, new customers receive free samples with express charges covered by the client, while existing customers get free samples with express charges paid by us.