DIN 7991 Flat Countersunk Head Screw
DIN 7991 Flat Countersunk Head Screw, made of steel, class 8.8, 10.9 or 12.9 , zinc plated, size M3-M16, Length from 10mm to 200mm from China Machine Screws Manufacturer
 |
 |
DIN 7991 Flat Countersunk Head Screw , Hexagon Lag Screw
Made of Carbon steel, Zinc Plated, class8.8 , 10.9 or 12.9
Size: M5 – M16
DIN 7991 Flat Countersunk Head Screw Specification as below:
| Size (d1) |
Thread (b) |
Socket Depth (t) |
Across Flat (s) |
Head Height (k max) |
Head Dia. (d2) |
| M3 | 12 | 1.2 | 2 | 1.7 | 6 |
| M4 | 14 | 1.8 | 2.5 | 2.3 | 8 |
| M5 | 16 | 2.3 | 3 | 2.8 | 10 |
| M6 | 18 | 2.5 | 4 | 3.3 | 12 |
| M8 | 22 | 3.5 | 5 | 4.4 | 16 |
| M10 | 26 | 4.4 | 6 | 5.5 | 20 |
| M12 | 30 | 4.6 | 8 | 6.5 | 24 |
| M16 | 38 | 5.3 | 10 | 7.5 | 30 |
| M20 | 46 | 5.9 | 12 | 8.5 | 36 |
| M24 | 54 | 10.3 | 14 | 14 | 39 |