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Allen Bolt Half Thread Length
08/11/2023
Omrook Admin
Allen Bolt Thread Length and Dimensions
| Metric (d) |
Thread Length (b) mm |
Head diameter | Head high | Socket width | Socket Depth (t min.) |
| (dk max.) | (k max.) | (s Nom.) | |||
| M 3 | 18 | 5.5 | 3 | 2.5 | 1.3 |
| M 4 | 20 | 7 | 4 | 3 | 2.0 |
| M 5 | 22 | 8.5 | 5 | 4 | 2.5 |
| M 6 | 24 | 10 | 6 | 5 | 3 |
| M 8 | 28 | 13 | 8 | 6 | 3.5 |
| M 10 | 32 | 16 | 10 | 8 | 4 |
| M 12 | 36 | 18 | 12 | 10 | 5 |
| M 14 | 40 | 21 | 14 | 12 | 6 |
| M 16 | 44 | 24 | 16 | 14 | 7 |
| M 20 | 52 | 30 | 20 | 17 | 8 |
| M 24 | 60 | 36 | 24 | 19 | 10 |
| M 27 | 66 | 40 | 27 | 19 | 12 |
| M 30 | 72 | 45 | 30 | 22 | 13.5 |
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