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Product Overview
Metric Grade 10.9 bolts are high-strength carbon steel fasteners manufactured to ISO 898-1, designed for demanding structural and mechanical applications. These bolts are quenched and tempered to achieve a minimum tensile strength of 1040 MPa and a yield strength of 940 MPa, making them ideal for critical load-bearing joints in machinery, automotive, and construction sectors.
Grade 10.9 bolts are widely specified for their excellent combination of strength, ductility, and cost-effectiveness. They are available in a range of finishes including plain, zinc-plated, and hot-dip galvanized, and are compatible with ISO metric coarse and fine threads. All bolts are batch tested for mechanical properties and supplied with full traceability and certification.
| Material | Alloyed Carbon Steel (Quenched & Tempered) |
| Grade | 10.9 |
| Material Standard | ISO 898-1 |
| Bolt Standard (Metric) | DIN 931 / DIN 933 / ISO 4014 / ISO 4017 |
| Bolt Standard (Inch) | ASME B18.2.3.1M |
| Thread Form | ISO Metric Coarse / Fine |
| Diameter Range | M6-M64 |
| Tensile Strength | 1040 MPa min |
| Yield Strength | 940 MPa min |
| Hardness | 32-39 HRC |
Complete the Fastener Set
Technical Data
| Size (M) | Pitch (mm) | A/F (mm) | Head Ht (mm) | Min L (mm) | Max L (mm) |
|---|---|---|---|---|---|
| M6 | 1.0 | 10 | 4.0 | 10 | 200 |
| M8 | 1.25 | 13 | 5.3 | 12 | 250 |
| M10 | 1.5 | 17 | 6.4 | 16 | 300 |
| M12 | 1.75 | 19 | 7.5 | 20 | 400 |
| M16 | 2.0 | 24 | 10.0 | 25 | 500 |
| M20 | 2.5 | 30 | 12.5 | 30 | 600 |
| M24 | 3.0 | 36 | 15.0 | 40 | 600 |
| M30 | 3.5 | 46 | 18.7 | 50 | 800 |
| M36 | 4.0 | 55 | 22.5 | 60 | 1000 |
| M42 | 4.5 | 65 | 26.0 | 80 | 1000 |
| M48 | 5.0 | 75 | 30.0 | 100 | 1200 |
| M56 | 5.5 | 85 | 35.0 | 120 | 1500 |
| M64 | 6.0 | 95 | 40.0 | 140 | 2000 |
| Standard | Covers | Thread |
|---|---|---|
| DIN 931 | Hex bolts, partial thread | Metric |
| DIN 933 | Hex bolts, full thread | Metric |
| ISO 4014 | Hex head screws, partial | Metric |
| ISO 4017 | Hex head screws, full | Metric |
| ASME B18.2.3.1M | Hex bolts (metric) | Metric |
| ISO 898-1 | Mechanical properties | Metric |
| Material Standard | Requirement |
|---|---|
| ISO 898-1 | Mechanical properties |
| EN 10204 3.1 | Mill test certificate |
| EN 10204 3.2 | TPI-witnessed MTC |
| ISO 4042 | Coating/finishing |
Material Chemistry
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.20-0.55 |
| Manganese (Mn) | 0.30-1.60 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.035 max |
| Silicon (Si) | 0.15-0.55 |
| Chromium (Cr) | 0.30 max |
| Nickel (Ni) | 0.30 max |
| Boron (B) | 0.003 max |
Fastener Performance
| Bolt Size | Dry (Nm) | Lubricated (Nm) | Clamp Load (kN) |
|---|---|---|---|
| M12 | 110 | 88 | 70 |
| M16 | 270 | 216 | 140 |
| M20 | 530 | 424 | 220 |
| M24 | 920 | 736 | 320 |
| M30 | 1800 | 1440 | 510 |
| M36 | 3100 | 2480 | 740 |
| M42 | 4700 | 3760 | 1050 |
| M48 | 6900 | 5520 | 1460 |
Industry Applications
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