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HEX SOCKET CAP SCREWS DIN912 GRADE 8.8 10.9 12.9
HEX SOCKET CAP SCREWS DIN912 GRADE 8.8 10.9 12.9
Bolt Standards:
DIN912 - Hexagon socket head cap screws
Strength Grades:
8.8: Minimum tensile strength of 800 N/mm²
10.9: Minimum tensile strength of 1000 N/mm²
12.9: Minimum tensile strength of 1200 N/mm²
Material and Properties:
Alloy steel
Provides high strength and hardness
Stainless steel
Austenitic (e.g. A2, A4) - Excellent corrosion resistance
Martensitic (e.g. 1.4006, 1.4021) - Good corrosion resistance and strength
Applications:
High-strength applications where a compact, low-profile fastener is required
Machinery, vehicles, equipment, structural connections
Corrosive environments (stainless steel versions)
Coatings and Finishes:
Plain (uncoated)
Zinc plated (for mild corrosion resistance)
Black oxide (for appearance)
Stainless steel bolts may have a passivation or polishing finish
Dimensions:
| nominal diameterd | thread pitchp | b | dk | k | s | t | |||
| max | min | max | min | max | min | min | |||
| M1.4 | 0.3 | 14 | 2.74 | 2.46 | 1.4 | 1.26 | 1.36 | 1.32 | 0.6 |
| M1 .6 | 0.35 | 15 | 3.14 | 2.86 | 1.6 | 1.46 | 1.56 | 1.52 | 0.7 |
| M 2 | 0.4 | 16 | 3.98 | 3.62 | 2 | 1.86 | 1.56 | 1.52 | |
| M2.5 | 0.45 | 17 | 4.68 | 4.32 | 2.5 | 2.36 | 2.06 | 2.02 | 1.1 |
| M3 | 0.5 | 18 | 5.68 | 5.32 | 3 | 2.86 | 2.58 | 2.52 | 1.3 |
| M4 | 0.7 | 20 | 7.22 | 6.78 | 4 | 3.82 | 3.08 | 3.02 | 2 |
| MS | 0.8 | 22 | 8.72 | 8.28 | s | 4.82 | 4.095 | 4.02 | 2.5 |
| M 6 | 1 | 24 | 10.22 | 9.78 | 6 | 5.7 | 5.14 | 5.02 | 3 |
| MS | 1.25/1 | 28 | 13.27 | 12.73 | 8 | 7.64 | 6.14 | 6.02 | 4 |
| M10 | 1.5/1.25/ 1 | 32 | 16.27 | 15.73 | 10 | 9.64 | 8.175 | 8.025 | s |
| M12 | 1.75/1.5/1.25 | 36 | 18.27 | 17.73 | 12 | 11.57 | 10.18 | 10.025 | 6 |
| M 14 | 2/1.5 | 40 | 21.33 | 20.67 | 14 | 12.57 | 12.21 | 12.032 | 7 |
| M 16 | 2/1.5 | 44 | 24.33 | 23.67 | 16 | 15.57 | 14.21 | 14.032 | 8 |
| M18 | 2.5/2/1.5 | 48 | 27.33 | 26.67 | 18 | 17.57 | 14.21 | 14.032 | 9 |
| M 20 | 2.5/2/1.5 | 52 | 30.33 | 29.67 | 20 | 19.48 | 17.23 | 17.05 | 10 |
| M22 | 2.5/2/1.5 | 56 | 33.39 | 32.61 | 22 | 21.48 | 17.23 | 17.05 | 11 |
| M 24 | 3/2 | 60 | 36.39 | 35.61 | 24 | 23.48 | 19.28 | 19.065 | 12 |
| M 27 | 3/2 | 66 | 40.39 | 39.61 | 27 | 26.48 | 19.28 | 19.065 | 13.5 |
| M 30 | 3.5/2 | 72 | 45.39 | 44.61 | 30 | 29.48 | 22.28 | 22.065 | 15.5 |
| M 33 | 3.5/2 | 78 | 50.39 | 49.61 | 33 | 32.38 | 24.28 | 24.065 | 18 |
| M 36 | 4/3 | 84 | 54.46 | 53.54 | 36 | 35.38 | 27.28 | 27.065 | 19 |
| M42 | 4.5/3 | 96 | 63.46 | 62.54 | 42 | 41.38 | 32.33 | 32.08 | 24 |
| M48 | 5/3 | 108 | 72.46 | 71.54 | 48 | 47.38 | 36.33 | 36.08 | 28 |
| M56 | 5.5/4 | 124 | 84.54 | 83.46 | 56 | 56.26 | 41.33 | 41.08 | 34 |
| M 64 | 6/4 | 140 | 96.54 | 95.46 | 64 | 63.26 | 46.33 | 46.08 | 38 |
| M72*4 | 6/4 | 156 | 108.5 | 107.5 | 72 | 71.26 | 55.4 | 55.1 | 43 |
| MS80*4 | 6/4 | 172 | 120.5 | 119.5 | 80 | 79.26 | 65.4 | 65.1 | 48 |
| M 90*4 | 6/4 | 192 | 135.6 | 134.4 | 90 | 89.13 | 75.4 | 75.1 | 54 |
| M100*4 | 6/4 | 212 | 150.6 | 149.4 | 100 | 99.13 | 85.47 | 85.12 | 60 |