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China Factory Suppliers of High-Performance Flange Bolts | Hex & Serrated Flange Bolts for Various Applications
Product Overview
| Product Name | Flange Bolt / Hex Flange Bolt / Serrated Flange Bolt |
| Standards | DIN 6921, ISO 1665, JIS B1189, ANSI B18.2.1, or customized |
| Material | Carbon Steel |
| Stainless Steel (SS304, SS316) | |
| Alloy Steel | |
| Grade | 4.8, 6.8, 8.8, 10.9, 12.9 (Carbon Steel) |
| A2-70, A4-70, A4-80 (Stainless Steel) | |
| Thread Type | Metric / UNC / UNF, Full or Partial Thread |
| Surface Finish | Zinc Plated (Blue / Yellow) |
| Hot-Dip Galvanized (HDG) | |
| Black Oxide | |
| Dacromet / Ruspert | |
| Plain / Oiled | |
| Size Range | Metric: M5 – M24, Length 10mm – 300mm |
| Inch: 1/4" – 1", Length 3/4" – 12" | |
| Custom sizes available |
Product Features
-
Integrated washer-type flange for better load distribution -
Serrated flange (optional) prevents loosening from vibration -
High tensile strength and durability -
Corrosion-resistant coatings for long-term use -
Time-saving during assembly – no need for separate washers
Applications
Automotive and engine components
Industrial machinery and equipment
Construction and structural assemblies
Electrical installations and enclosures
Furniture and metal fabrication
Marine and heavy-duty industries
Packaging & Delivery
| Packaging | Bulk in cartons with pallets |
| Small boxes with custom logos | |
| Label and barcode customization available | |
| Lead Time | 7–30 days depending on order volume |
| Shipping Port | Tianjin, China |
Why Choose Hebei Chudu
Frequently Asked Questions
A flange bolt features an integrated circular flange directly under the bolt head. This design distributes the clamping load over a larger surface area, eliminating the need for a separate washer and protecting the mating material from damage.
Serrated flange bolts feature angled ridges on the bearing surface of the flange. When tightened, these serrations grip the mating surface, providing excellent resistance to loosening caused by vibration or dynamic movements.
Our products are manufactured in strict compliance with international standards including DIN 6921, ISO 1665, JIS B1189, and ANSI B18.2.1. We offer carbon steel grades (4.8 to 12.9) and stainless steel options (A2-70, A4-70, A4-80).
Yes, Hebei Chudu offers comprehensive OEM & ODM services. We can customize sizes, thread pitches, surface coatings (like Dacromet, HDG, or Zinc plating), and package products in custom boxes with your logo and barcodes.
Our standard lead time ranges from 7 to 30 days, depending on the specifications and quantity of your order. All orders are packed securely and shipped directly from the Port of Tianjin, China.