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High-Quality Flange Nuts from China Factory | Serrated & Hex Flange Lock Nuts Suppliers
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High-Quality Flange Nuts from China Factory | Serrated & Hex Flange Lock Nuts Suppliers

Hebei Chudu Metal Products Co., Ltd. is a leading manufacturer in China, specializing in high-quality flange nuts. Our flange nuts feature a wide flange at the base that acts as a built-in washer, enhancing their fastening capabilities. Available in both smooth and serrated types, these flange nuts deliver exceptional performance with reduced part count and superior resistance to loosening caused by vibration. As trusted suppliers from a reliable factory, we ensure that our products meet the highest quality standards for optimal durability and effectiveness.

  • Product Name Flange Nut / Serrated Flange Nut / Hex Flange Lock Nut
  • Standards DIN 6923, ISO 4161, JIS B1190, ANSI B18.2.2, or custom
  • Grade 6, 8, 10, 12 / A2-70, A4-80
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Product Details

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Product Overview

Product Name Flange Nut / Serrated Flange Nut / Hex Flange Lock Nut
Standards DIN 6923, ISO 4161, JIS B1190, ANSI B18.2.2, or custom
Material Carbon Steel
Stainless Steel (A2-70, A4-70)
Alloy Steel
Brass (optional)
Grade 6, 8, 10, 12 / A2-70, A4-80
Thread Type Metric / UNC / UNF
Surface Treatment Zinc Plated (Clear / Yellow / Blue)
Black Oxide
Hot-Dip Galvanized (HDG)
Dacromet / Ruspert
Plain or Polished
Size Range Metric: M5 – M24
Inch sizes available upon request

Product Features

Integrated flange
Integrated flange distributes pressure to prevent damage to the material
Serrated version
Serrated version helps resist loosening from vibration and torque
Reduced need for separate washers
Reduced need for separate washers, saving time and cost
Durable construction
Durable construction for high-strength fastening
Corrosion-resistant
Corrosion-resistant finishes for outdoor or industrial use
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Applications

Automotive

Automotive and truck assemblies

Agricultural & Construction

Agricultural and construction machinery

Steel Structure

Steel structure connections

Electrical

Equipment and electrical installations

Solar Mounting

Solar mounting systems

General Fastening

General-purpose industrial fastening

Packaging & Delivery

Packaging Bulk in cartons and pallets
Small boxes or polybags for retail packing
Customized logo and labeling available
Lead Time 7–30 days depending on order quantity and customization
Shipping Port Tianjin, China

Why Choose Hebei Chudu

  • Over 10 years experience in fastener production and export.
  • Full control of manufacturing and quality inspection processes.
  • Fast lead times and competitive factory pricing.
  • Wide product range to match bolts and assemblies.
  • ISO 9001-certified factory and export-ready documentation.
  • Custom designs and special materials available.

Frequently Asked Questions

What standards do your flange nuts comply with?
Our flange nuts are manufactured in compliance with international standards including DIN 6923, ISO 4161, JIS B1190, and ANSI B18.2.2. Custom standards are also available upon request.
What materials and grades are available?
We offer flange nuts in Carbon Steel, Stainless Steel (A2-70, A4-70), Alloy Steel, and optional Brass. Available grades include 6, 8, 10, and 12 for steel, and A2-70/A4-80 for stainless steel.
What are the benefits of using a serrated flange nut?
The integrated flange distributes pressure evenly to protect the mating material, while the serrated design grips the bearing surface to resist loosening caused by vibration and torque.
Which surface treatments do you offer for corrosion resistance?
Available surface treatments include Zinc Plating (Clear, Yellow, or Blue), Black Oxide, Hot-Dip Galvanizing (HDG), Dacromet, Ruspert, and Plain or Polished finishes.
What is the typical lead time and shipping port?
Our standard lead time ranges from 7 to 30 days, depending on the order quantity and customization requirements. All orders are shipped from the port of Tianjin, China.
Do you offer custom packaging and branding?
Yes. We support bulk packing in cartons and pallets, small boxes or polybags for retail, and customized logo and labeling configurations to meet your specific market needs.