Socket head cap screws
DIN 912 – Hexagon socket head cap screws
DIN 912 · ISO 4762. Dimensions from the HBS technical datasheet – in stock, with EN 10204 3.1 / 3.2 certificates.
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Dimensions
DIN 912 dimension tables.
Dimensions in mm
| Thread d | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | M24 | M30 | M36 | M42 | M48 | M56 | M64 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P | – | 0.35 | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 |
| b | – | 15 | 16 | 17 | 18 | 20 | 22 | 24 | 28 | 32 | 36 | 40 | 44 | 52 | 60 | 72 | 84 | 96 | 108 | 124 | 140 |
| dk | max. | 3 | 3.8 | 4.5 | 5.5 | 7 | 8.5 | 10 | 13 | 16 | 18 | 21 | 24 | 30 | 36 | 45 | 54 | 63 | 72 | 84 | 96 |
| max., "grooved head" | 3.14 | 3.98 | 4.68 | 5.68 | 7.22 | 8.72 | 10.22 | 13.27 | 16.27 | 18.27 | 21.33 | 24.33 | 30.33 | 36.39 | 45.39 | 54.46 | 63.46 | 72.46 | 84.54 | 96.54 | |
| min. | 2.86 | 3.62 | 4.32 | 5.32 | 6.78 | 8.28 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 29.67 | 35.61 | 44.61 | 53.54 | 62.54 | 71.54 | 83.46 | 95.46 | |
| da | max. | 2 | 2.6 | 3.1 | 3.6 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 22.4 | 26.4 | 33.4 | 39.4 | 45.6 | 52.6 | 63 | 71 |
| ds | max. | 1.6 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 24 | 30 | 36 | 42 | 48 | 56 | 64 |
| min. | 1.46 | 1.86 | 2.36 | 2.86 | 3.82 | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | 23.67 | 29.67 | 35.61 | 41.61 | 47.61 | 55.54 | 63.54 | |
| e | min. | 1.73 | 1.73 | 2.30 | 2.87 | 3.44 | 4.58 | 5.72 | 6.86 | 9.15 | 11.43 | 13.72 | 16.00 | 19.44 | 21.73 | 25.15 | 30.85 | 36.57 | 41.13 | 46.83 | 52.53 |
| h | max. | 0.34 | 0.51 | 0.51 | 0.51 | 0.6 | 0.6 | 0.68 | 1.02 | 1.02 | 1.45 | 1.45 | 1.45 | 2.04 | 2.04 | 2.89 | 2.89 | 3.06 | 3.91 | 5.95 | 5.95 |
| k | max. | 1.6 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 24 | 30 | 36 | 42 | 48 | 56 | 64 |
| min. | 1.46 | 1.86 | 2.36 | 2.86 | 3.82 | 4.82 | 5.7 | 7.64 | 9.64 | 11.57 | 13.57 | 15.57 | 19.48 | 23.48 | 29.48 | 35.38 | 41.38 | 47.38 | 55.26 | 63.26 | |
| r | min. | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.8 | 0.8 | 1 | 1 | 1.2 | 1.6 | 2 | 2 |
| s | nominal | 1.5 | 1.5 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 17 | 19 | 22 | 27 | 32 | 36 | 41 | 46 |
| max. | 1.58 | 1.58 | 2.08 | 2.58 | 3.08 | 4.095 | 5.14 | 6.14 | 8.175 | 10.175 | 12.212 | 14.212 | 17.23 | 19.275 | 22.275 | 27.275 | 32.33 | 36.33 | 41.33 | 46.33 | |
| min. | 1.52 | 1.52 | 2.02 | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | 12.032 | 14.032 | 17.05 | 19.065 | 22.065 | 27.065 | 32.08 | 36.08 | 41.08 | 46.08 | |
| t | min. | 0.7 | 1 | 1.1 | 1.3 | 2 | 2.5 | 3 | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 15.5 | 19 | 24 | 28 | 34 | 38 |
| v | max. | 0.16 | 0.2 | 0.25 | 0.3 | 0.4 | 0.5 | 0.6 | 0.8 | 1 | 1.2 | 1.4 | 1.6 | 2 | 2.4 | 3 | 3.6 | 4.2 | 4.8 | 5.6 | 6.4 |
| dw | min. | 2.72 | 3.48 | 4.18 | 5.07 | 6.53 | 8.03 | 9.38 | 12.33 | 15.33 | 17.23 | 20.17 | 23.17 | 28.87 | 34.81 | 43.61 | 52.54 | 61.34 | 70.34 | 82.26 | 94.26 |
| w | min. | 0.55 | 0.55 | 0.85 | 1.15 | 1.4 | 1.9 | 2.3 | 3.3 | 4 | 4.8 | 5.8 | 6.8 | 8.6 | 10.4 | 13.1 | 15.3 | 16.3 | 17.5 | 19 | 22 |
Shank length ls min. and grip length lg max., in mm
| Length l | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| nom. | min. | max. | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg |
| 2.5 | 2.3 | 2.7 | Fully threaded | |||||||||||||||||||
| 3 | 2.8 | 3.2 | Fully threaded | |||||||||||||||||||
| 4 | 3.76 | 4.24 | Fully threaded | |||||||||||||||||||
| 5 | 4.76 | 5.24 | Fully threaded | |||||||||||||||||||
| 6 | 5.76 | 6.24 | Fully threaded | |||||||||||||||||||
| 8 | 7.71 | 8.29 | Fully threaded | |||||||||||||||||||
| 10 | 9.71 | 10.29 | Fully threaded | |||||||||||||||||||
| 12 | 11.65 | 12.35 | Fully threaded | |||||||||||||||||||
| 16 | 15.65 | 16.35 | Fully threaded | |||||||||||||||||||
| 20 | 19.58 | 20.42 | – | – | 2 | 4 | full | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| 25 | 24.58 | 25.42 | – | – | – | – | 5.75 | 8 | 4.5 | 7 | full | – | – | – | – | – | – | – | – | – | – | |
| 30 | 29.58 | 30.42 | – | – | – | – | – | – | 9.5 | 12 | 6.5 | 10 | 4 | 8 | full | – | – | – | – | – | – | |
| 35 | 34.5 | 35.5 | – | – | – | – | – | – | – | – | 11.5 | 15 | 9 | 13 | 6 | 11 | full | – | – | – | – | |
| 40 | 39.5 | 40.5 | – | – | – | – | – | – | – | – | 16.5 | 20 | 14 | 18 | 11 | 16 | 5.75 | 12 | full | – | – | |
| 45 | 44.5 | 45.5 | – | – | – | – | – | – | – | – | – | – | 19 | 23 | 16 | 21 | 10.75 | 17 | 5.5 | 13 | full | |
| 50 | 49.5 | 50.5 | – | – | – | – | – | – | – | – | – | – | 24 | 28 | 21 | 26 | 15.75 | 22 | 10.5 | 18 | – | – |
| 55 | 54.4 | 55.6 | – | – | – | – | – | – | – | – | – | – | – | – | 26 | 31 | 20.75 | 27 | 15.5 | 23 | 10.25 | 19 |
| 60 | 59.4 | 60.6 | – | – | – | – | – | – | – | – | – | – | – | – | 31 | 36 | 25.75 | 32 | 20.5 | 28 | 15.25 | 24 |
| 65 | 64.4 | 65.6 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 30.75 | 37 | 25.5 | 33 | 20.25 | 29 |
| 70 | 69.4 | 70.6 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 35.75 | 42 | 30.5 | 38 | 25.25 | 34 |
| 80 | 79.4 | 80.6 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 45.75 | 52 | 40.5 | 48 | 35.25 | 44 |
| 90 | 89.3 | 90.7 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 50.5 | 58 | 45.25 | 54 |
| 100 | 99.3 | 100.7 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 60.5 | 68 | 55.25 | 64 |
| 110 | 109.3 | 110.7 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 65.25 | 74 |
| 120 | 119.3 | 120.7 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 75.25 | 84 |
Shank length ls min. and grip length lg max., in mm
| Length l | M14 | M16 | M20 | M24 | M30 | M36 | M42 | M48 | M56 | M64 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| nom. | min. | max. | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg |
| 20 | 19.58 | 20.42 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| 25 | 24.58 | 25.42 | full | full | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 30 | 29.58 | 30.42 | full | full | full | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||
| 35 | 34.5 | 35.5 | full | full | full | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||
| 40 | 39.5 | 40.5 | full | full | full | full | – | – | – | – | – | – | – | – | – | – | – | – | ||||
| 45 | 44.5 | 45.5 | full | full | full | full | full | – | – | – | – | – | – | – | – | – | – | |||||
| 50 | 49.5 | 50.5 | full | full | full | full | full | – | – | – | – | – | – | – | – | – | – | |||||
| 55 | 54.4 | 55.6 | full | full | full | full | full | full | – | – | – | – | – | – | – | – | ||||||
| 60 | 59.4 | 60.6 | 10 | 20 | full | full | full | full | full | full | – | – | – | – | – | – | ||||||
| 65 | 64.4 | 65.6 | 15 | 25 | 11 | 21 | full | full | full | full | full | – | – | – | – | – | – | |||||
| 70 | 69.4 | 70.6 | 20 | 30 | 16 | 26 | full | full | full | full | full | full | – | – | – | – | ||||||
| 80 | 79.4 | 80.6 | 30 | 40 | 26 | 36 | 15.5 | 28 | full | full | full | full | full | full | – | – | ||||||
| 90 | 89.3 | 90.7 | 40 | 50 | 36 | 46 | 25.5 | 38 | 15 | 30 | full | full | full | full | full | full | ||||||
| 100 | 99.3 | 100.7 | 50 | 60 | 46 | 56 | 35.5 | 48 | 25 | 40 | full | full | full | full | full | full | ||||||
| 110 | 109.3 | 110.7 | 60 | 70 | 56 | 66 | 45.5 | 58 | 35 | 50 | 20.5 | 38 | full | full | full | full | full | |||||
| 120 | 119.3 | 120.7 | 70 | 80 | 66 | 76 | 55.5 | 68 | 45 | 60 | 30.5 | 48 | 16 | 36 | full | full | full | full | ||||
| 130 | 129.2 | 130.8 | 80 | 90 | 76 | 86 | 65.5 | 78 | 55 | 70 | 40.5 | 58 | 26 | 46 | full | full | full | full | ||||
| 140 | 139.2 | 140.8 | 90 | 100 | 86 | 96 | 75.5 | 88 | 65 | 80 | 50.5 | 68 | 36 | 56 | 21.5 | 44 | full | full | full | |||
| 150 | 149.2 | 150.8 | – | – | 96 | 106 | 85.5 | 98 | 75 | 90 | 60.5 | 78 | 46 | 66 | 31.5 | 54 | full | full | full | |||
| 160 | 159.2 | 160.8 | – | – | 106 | 116 | 95.5 | 108 | 85 | 100 | 70.5 | 88 | 56 | 76 | 41.5 | 64 | 27 | 52 | full | full | ||
| 180 | 179.2 | 180.8 | – | – | – | – | 115.5 | 128 | 105 | 120 | 90.5 | 108 | 76 | 96 | 61.5 | 84 | 47 | 72 | 28.5 | 56 | full | |
| 200 | 199.08 | 200.93 | – | – | – | – | 135.5 | 148 | 125 | 140 | 110.5 | 128 | 96 | 116 | 81.5 | 104 | 67 | 92 | 48.5 | 76 | 30 | 60 |
| 220 | 219.08 | 220.93 | – | – | – | – | – | – | – | – | – | – | – | – | 101.5 | 124 | 87 | 112 | 68.5 | 96 | 50 | 80 |
| 240 | 239.08 | 240.93 | – | – | – | – | – | – | – | – | – | – | – | – | 121.5 | 144 | 107 | 132 | 88.5 | 116 | 70 | 100 |
| 260 | 258.95 | 261.05 | – | – | – | – | – | – | – | – | – | – | – | – | 141.5 | 164 | 127 | 152 | 108.5 | 136 | 90 | 120 |
| 280 | 278.95 | 281.05 | – | – | – | – | – | – | – | – | – | – | – | – | 161.5 | 184 | 147 | 172 | 128.5 | 156 | 110 | 140 |
| 300 | 298.95 | 301.05 | – | – | – | – | – | – | – | – | – | – | – | – | 181.5 | 204 | 167 | 192 | 148.5 | 176 | 130 | 160 |
- d
- Nominal thread diameter
- P
- Thread pitch, coarse
- b
- Thread length (reference)
- dk
- Head diameter
- da
- Transition diameter
- ds
- Body diameter
- k
- Head height
- r
- Fillet radius
- s
- Socket size
- e
- Socket across corners
- t
- Depth of driving feature
- v
- Chamfer or radius, max.
- w
- Thickness between socket and bearing face
- dw
- Bearing face diameter
Shank and grip lengths per length on pages 2 and 3. Grades and finishes: hbsfasteners.nl/products/socket-screws.
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