Step bolt are appropriately named because they are used as climbing steps on communication and utility poles and towers.
| Screw Thread d | M5 | M6 | M8 | M10 | M12 | M16 | M20 | ||
| P | Pitch | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
| b | L≤125 | 16 | 18 | 22 | 26 | 30 | 38 | 46 | |
| 125＜L≤200 | 22 | 24 | 28 | 32 | 36 | 44 | 52 | ||
| L>200 | / | / | 41 | 45 | 49 | 57 | 65 | ||
| dk | max | 13.55 | 16.55 | 20.65 | 24.65 | 30.65 | 38.8 | 46.8 | |
| min | 12.45 | 15.45 | 19.35 | 23.35 | 29.35 | 37.2 | 45.2 | ||
| ds | max | 5 | 6 | 8 | 10 | 12 | 16 | 20 | |
| min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | ||
| k1 | max | 4.1 | 4.6 | 5.6 | 6.6 | 8.75 | 12.9 | 15.9 | |
| min | 2.9 | 3.4 | 4.4 | 5.4 | 7.25 | 11.1 | 14.1 | ||
| k | max | 3.3 | 3.88 | 4.88 | 5.38 | 6.95 | 8.95 | 11.05 | |
| min | 2.7 | 3.12 | 4.12 | 4.62 | 6.05 | 8.05 | 9.95 | ||
| s | max | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 | |
| min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | ||
| Weight of per 1000 steel products(≈kg) | - | - | - | - | - | - | - | ||