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Made from carbon steel, these bolts feature a flanged head that helps distribute pressure evenly, reducing the risk of damage to the materials being fastened. These bolts are ideal for medium-strength applications and are widely used in general construction, automotive, and manufacturing.
Their versatility and cost-effectiveness make them a popular choice for securing components in machines, vehicles, and buildings.
| Name | Hex Flange Bolts | Materials | Carbon Steel/Stainless Steel |
| Standards | DIN ISO ANC BSW JIS etc. | Strength level | 4.8 8.8 10.9 12.9 A2-70 A4-70 A4-80 |
| Size | M3-M50 | Surface finish | ZPHDGBLACKDacromet etc. |
| Length | 15-500 | Samples | Available |
| Thread specification | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | ||||
| d | ||||||||||||
| P | pitch | coarse teeth | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | ||
| fine teeth 1 | / | / | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | ||||
| fine teeth 2 | / | / | / | 1 | 1.25 | / | / | / | ||||
| b | L≤125 | 16 | 18 | twenty two | 26 | 30 | 34 | 38 | 46 | |||
| 125＜L≤200 | / | / | 28 | 32 | 36 | 40 | 44 | 52 | ||||
| L＞200 | / | / | / | / | / | / | 57 | 65 | ||||
| c | minimum | 1 | 1.1 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 3 | |||
| d a | Type A | maximum value | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 22.4 | ||
| Type B | maximum value | 6.2 | 7.4 | 10 | 12.6 | 15.2 | 17.7 | 20.7 | 25.7 | |||
| dc | maximum value | 11.8 | 14.2 | 18 | 22.3 | 26.6 | 30.5 | 35 | 43 | |||
| ds | maximum value | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | |||
| minimum | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | ||||
| of u | maximum value | 5.5 | 6.6 | 9 | 11 | 13.5 | 15.5 | 17.5 | twenty two | |||
| dw | minimum | 9.8 | 12.2 | 15.8 | 19.6 | 23.8 | 27.6 | 31.9 | 39.9 | |||
| and | minimum | 8.71 | 10.95 | 14.26 | 16.5 | 17.62 | 19.86 | 23.15 | 29.87 | |||
| f | maximum value | 1.4 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | |||
| k | maximum value | 5.4 | 6.6 | 8.1 | 9.2 | 11.5 | 12.8 | 14.4 | 17.1 | |||
| k 1 | minimum | 2 | 2.5 | 3.2 | 3.6 | 4.6 | 5.1 | 5.8 | 6.8 | |||
| r 1 | minimum | 0.25 | 0.4 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.8 | |||
| r 2 | maximum value | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.9 | 1 | 1.2 | |||
| r 3 | minimum | 0.1 | 0.1 | 0.15 | 0.2 | 0.25 | 0.3 | 0.35 | 0.4 | |||
| r 4 | ≈ | 3 | 3.4 | 4.3 | 4.3 | 6.4 | 6.4 | 6.4 | 8.5 | |||
| s | max = nominal | 8 | 10 | 13 | 15 | 16 | 18 | twenty one | 27 | |||
| minimum | 7.78 | 9.78 | 12.73 | 14.73 | 15.73 | 17.73 | 20.67 | 26.67 | ||||
| t | maximum value | 0.15 | 0.2 | 0.25 | 0.3 | 0.35 | 0.45 | 0.5 | 0.65 | |||
| minimum | 0.05 | 0.05 | 0.1 | 0.15 | 0.15 | 0.2 | 0.25 | 0.3 | ||||
| thread length b | - | - | - | - | - | - | - | - | ||||
Befast’s Grade 4.8 Hex Flange Bolts offer numerous advantages. Their flange design allows for improved load distribution, which helps reduce the likelihood of material deformation or damage. The bolts are also designed for easy installation, ensuring quick assembly in construction and manufacturing processes.
The steel construction ensures a solid and dependable hold, making them suitable for a wide variety of applications, while their cost-effectiveness makes them a budget-friendly option for companies seeking reliable fastening solutions without compromising on performance.
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