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Grade 10.9 carriage bolts are commonly used in construction, automotive, and industrial applications that require secure and reliable connections.
Befast’s Grade 10.9 Carriage Bolts offer excellent performance under stress, with high tensile strength and exceptional durability in tough conditions.
| Name | Carriage 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 | M16 | M20 | |
| d | ||||||||
| P | pitch | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 |
| b | L≤125 | 16 | 18 | twenty two | 26 | 30 | 38 | 46 |
| 125＜L≤200 | twenty two | twenty four | 28 | 32 | 36 | 44 | 52 | |
| L>200 | - | - | 41 | 45 | 49 | 57 | 65 | |
| dk | maximum value | 13.55 | 16.55 | 20.65 | 24.65 | 30.65 | 38.8 | 46.8 |
| minimum | 12.45 | 15.45 | 19.35 | 23.35 | 29.35 | 37.2 | 45.2 | |
| ds | maximum value | 5 | 6 | 8 | 10 | 12 | 16 | 20 |
| minimum | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | |
| k 1 | maximum value | 4.1 | 4.6 | 5.6 | 6.6 | 8.75 | 12.9 | 15.9 |
| minimum | 2.9 | 3.4 | 4.4 | 5.4 | 7.25 | 11.1 | 14.1 | |
| k | maximum value | 3.3 | 3.88 | 4.88 | 5.38 | 6.95 | 8.95 | 11.05 |
| minimum | 2.7 | 3.12 | 4.12 | 4.62 | 6.05 | 8.05 | 9.95 | |
| r 1 | ≈ | 10.7 | 12.6 | 16 | 19.2 | 24.1 | 29.3 | 33.9 |
| r 2 | maximum value | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 1 | 1 |
| r 3 | maximum value | 0.75 | 0.9 | 1.2 | 1.5 | 1.8 | 2.4 | 3 |
| s | maximum value | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
| minimum | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | |
| Thousand pieces of steel weight ≈kg | - | - | - | - | - | - | - | |
| thread length b | - | - | - | - | - | - | - | |
Befast’s Grade 10.9 Carriage Bolts provide excellent load-bearing capacity, with a tensile strength of 1040 MPa. Their high strength makes them ideal for heavy-duty applications in construction and machinery, where performance under high pressure is essential.
Our fasteners are rigorously tested to meet the highest standards, ensuring consistent quality. Bulk orders are available, ensuring you get the best deal for large-scale projects.
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