DIN 931 defines hexagon head bolts with partial thread (half thread). These bolts have a partially threaded shaft, where the thread covers only a portion of the bolt, leaving the rest smooth. The hexagonal head allows for easy tightening and loosening with standard tools. DIN 931 bolts are typically used in applications requiring high tensile strength and secure connections. Available in a variety of sizes and diameters, they are commonly made from stainless steel or steel.
| Boy/ Ø | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| k max. | 3,5 | 4,0 | 5,3 | 6,4 | 7,5 | 8,8 | 10,0 | 11,5 | 12,5 | 14,0 | 15,0 | 17,0 | 18,7 | 20,58 | 22,08 |
| s | 8 | 10 | 13 | 17 | 19 | 22 | 24 | 27 | 30 | 32 | 36 | 41 | 46 | 50 | 55 |
| e | 8,79 | 11,05 | 14,38 | 18,90 | 21,10 | 24,49 | 26,75 | 30,14 | 33,53 | 35,72 | 38,98 | 45,20 | 50,85 | 55,37 | 60,79 |
| b<125 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46 | 50 | 54 | 60 | 66 | 72 | 78 |
| b> | 22 | 24 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | 66 | 72 | 78 | 84 |
| ⬢ | 8 | 10 | 13 | 17 | 19 | 22 | 24 | 27 | 30 | 32 | 36 | 41 | 46 | 50 | 55 |