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High-Performance Flange Bolts from China Suppliers | Hex & Serrated Flange Bolt Factory
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
Over 10 years of professional manufacturing experience in the fastener industry.
Fully equipped factory with advanced machinery to ensure high-precision production.
Strict quality control system (ISO 9001 certified) for consistent product standards.
OEM & ODM services customized to meet the specific demands of global customers.
Competitive pricing paired with a highly responsive sales and technical support team.
A wide range of high-quality fasteners with flexible minimum order quantities.
Frequently Asked Questions
What standards do your flange bolts comply with?
Our flange bolts are manufactured to meet international standards including DIN 6921, ISO 1665, JIS B1189, and ANSI B18.2.1. We also offer customization to meet your specific drawing requirements.
What materials and grades are available for these bolts?
We supply flange bolts in Carbon Steel (Grades 4.8, 6.8, 8.8, 10.9, 12.9), Stainless Steel (SS304/SS316 with Grades A2-70, A4-70, A4-80), and high-strength Alloy Steel.
What is the advantage of using a flange bolt over a standard hex bolt?
Flange bolts feature an integrated washer flange that distributes the clamping load over a wider surface area. This eliminates the need for a separate washer, saving assembly time and preventing loosening caused by vibration.
What surface finishes do you provide?
To ensure excellent corrosion resistance, we provide multiple finishes including Zinc Plated (Blue/Yellow), Hot-Dip Galvanized (HDG), Black Oxide, Dacromet, Ruspert, and Plain/Oiled options.
What is your average lead time and shipping port?
Our standard lead time ranges between 7 to 30 days, depending on the order size and customization requirements. All orders are shipped via the Tianjin Port in China.
Do you offer OEM/ODM and custom packaging?
Yes, we provide full OEM and ODM support. We can manufacture custom bolt sizes, print small boxes with your custom company logo, and design labels or barcodes according to your specifications.