Product Description
M12 Grade 10.9 Self Colour Steel Hexagon Flange Bolts DIN 6921
M12 hexagon flange bolts manufactured from grade 10.9 high tensile steel to DIN 6921, with a self colour, unplated finish. These part threaded bolts feature an M12 x 1.75mm metric coarse thread and an integral flange beneath the hexagon head to spread the clamping load over a wider bearing area.
Specifications
| Feature | Specification |
|---|---|
| Thread Size | M12 |
| Thread Pitch | 1.75mm metric coarse |
| Material | High tensile steel |
| Property Class | 10.9 |
| Finish | Self colour, unplated |
| Head Type | Hexagon with integral flange |
| Thread Coverage | Part threaded |
| Dimensional Standard | DIN 6921 |
Available Lengths
| Thread Size | Bolt Length | Thread Pitch |
|---|---|---|
| M12 | 45mm | 1.75mm |
| M12 | 50mm | 1.75mm |
| M12 | 60mm | 1.75mm |
| M12 | 70mm | 1.75mm |
| M12 | 80mm | 1.75mm |
| M12 | 90mm | 1.75mm |
Bolt length is measured from the bearing surface beneath the flange to the end of the bolt.
Key Features
- DIN 6921 hexagon flange bolt design
- Grade 10.9 high tensile steel
- M12 metric coarse thread with 1.75mm pitch
- Integral flange provides a wider bearing surface
- Part threaded design with an unthreaded shank
- Self colour finish without a plated coating
- Choice of six lengths from 45mm to 90mm
DIN 6921 specifies the hexagon flange bolt dimensions. BS EN ISO 898-1 is the reference standard for the mechanical properties of steel bolts with specified property classes, including 10.9. Please contact us before ordering to confirm compliance certification availability.
Select the bolt length and thread engagement to suit the assembly, and use compatible nuts of the appropriate strength. Follow the tightening requirements for the application. Self colour steel may require additional corrosion protection where exposed to moisture.
Related Products
Specifications are intended as a guide. Confirm the required thread size, pitch, length and flange clearance before ordering.
| A | B | C | D | E | F | G |
| 12mm | 45mm | 30mm | 25mm | 11.5mm | 16mm | 1.75 |
| 12mm | 60mm | 30mm | 25mm | 11.5mm | 16mm | 1.75 |
| 12mm | 50mm | 35mm | 25mm | 11.5mm | 16mm | 1.75 |
| 12mm | 70mm | 30mm | 25mm | 11.5mm | 16mm | 1.75 |
| 12mm | 80mm | 35mm | 25mm | 11.5mm | 16mm | 1.75 |
| 12mm | 90mm | 35mm | 25mm | 11.5mm | 16mm | 1.75 |
Thread - Standard Metric Coarse
Material - Self Colour Steel (None Plated)
Grade - 10.9 High Tensile
Type - Part Thread DIN9621
