Hex flange bolts are high-strength fasteners with a hex head, flange, and shank. The flange can be large, small, flat-bottomed, or serrated (anti-slip). The flange structure increases the load-bearing area, disperses the load, reduces pressure on the connecting surface, and effectively prevents loosening, making them suitable for various high-load applications. Hex flange bolts are sometimes referred to as flange bolts or frame bolts.
Specifications
| Forming Process | Hot forging, Cold heading. |
| Size | Metric Sizes: M10 to M100. Imperial Sizes: 3/8″ to 8″. |
| Thread Types | Metric coarse thread, Fine thread, UNC, UNF. |
| Grade | Grade 4.6，6.8，8.8，10.9，12.9; A2-70, A2-80, A4-70, A4-80. |
| Standard | DIN, ISO, ASME, JIS. |
| Materials | Carbon Steel, Stainless Steel, Alloy Steel, Titanium Alloy, Aluminum Alloy, Brass. |
| Finishes | Hot-Dip Galvanizing, Electroplated Zinc, Dacromet Coating, Black Oxide, Heat Treatment, Phosphate Coating, Nickel Plated. |
| Packaging | Plastic bags, plastic boxes, cartons, pallets or custom packaging services. |
Structure
- H: Head Height
- L: Shank Length
- D: Diameter
- L1: Thread Length
- W: Washer Diameter
- W1: Head Diameter
World Standard for Hex Flange Bolts
| ISO 15072 | ASME/ANSI B18.2.3.9M | JIS B 1189 | DIN 6921 |
| ISO 15071 | ASME/ANSI B18.2.1-8 | EN 14219 | DIN 6922 |
| ISO 4162 | ASME/ANSI B18.2.3-32 | IFI 111 | DIN EN 1665 |
| GOST R50274 | GOST R55739 | NF E25-504 | ASME/ANSI B18.2.3.4M |
Types of Hex Flange Bolts
Flange Hex Bolts for Automobile
Brass Flange Bolt
Carbon Steel Flange Bolt
Dacromet Flange Bolt
Applications
- Automotive Industry: Trucks, heavy-duty vehicles
- Construction Engineering: Steel structures, bridges
- Heavy Machinery: Excavators, cranes
- Railway: Rail tracks
Processing Services
- OEM/ODM
- Custom Dimensions
- Surface Treatments
- Special Coatings
- Special Materials
- Mass Production