Product Description
M8 Grade 10.9 Self Colour Steel Part Threaded Flange Bolts DIN 6921
M8 part threaded hexagon flange bolts manufactured from grade 10.9 high tensile steel to DIN 6921, with a black self colour, unplated finish. These bolts feature an M8 x 1.25mm metric coarse thread, an unthreaded shank and an integral flange beneath the hexagon head to distribute the clamping load over a wider bearing area.
Specifications
| Feature | Specification |
|---|---|
| Thread Size | M8 |
| Thread Pitch | 1.25mm metric coarse |
| Material | High tensile steel |
| Property Class | 10.9 |
| Finish | Black 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 |
|---|---|---|
| M8 | 35mm | 1.25mm |
| M8 | 40mm | 1.25mm |
| M8 | 50mm | 1.25mm |
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
- M8 metric coarse thread with 1.25mm pitch
- Part threaded design with an unthreaded shank
- Integral flange provides a wider bearing surface
- Black self colour finish without a plated coating
- Choice of 35mm, 40mm and 50mm lengths
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 shank length to suit the assembly, ensuring sufficient thread engagement with a matching M8 x 1.25mm nut or tapped hole. Follow the tightening requirements for the application. Self colour steel may require additional corrosion protection where exposed to moisture.
Related Products
- M8 Grade 10.9 Fully Threaded Flange Bolts
- M6 Grade 10.9 Part Threaded Flange Bolts
- M12 Grade 10.9 Part Threaded Flange Bolts
- Matching Nuts
- View All Bolts and Set Screws
- Thread Size Guide
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 |
| 8mm | 35mm | 23mm | 17.5mm | 7.5mm | 13mm | 1.25 |
| 8mm | 40mm | 23mm | 17.5mm | 7.5mm | 13mm | 1.25 |
| 8mm | 50mm | 23mm | 17.5mm | 7.5mm | 13mm | 1.25 |
Thread - Metric Coarse, standard.
Grade - 10.9 High Tensile
Finish - Black (None plated steel)
Type - DIN6921 Part Thread
