| Ìwọ̀n Igbó (mm) | N | N1 | O | P | Q | R | S | T | U | V | ZE |
| Φ20 | 5 | 12 | 24 | 34 | - | IhoΦ4.3, OpoΦM5×0.8× 6 Ijinle;Counterbore ihoΦ7× 5 Ijinle;(2-ẹgbẹ) | M8x1.25 | 15.9 | 8 | 19 | 12 |
| Φ25 | 5 | 12 | 28 | 40 | - | IhoΦ5.1, OpoΦM6×1x8 Ijinle;Counterbore ihoΦ8x6 Ijinle;(2-ẹgbẹ) | M8x1.25 | 15.9 | 10 | 24 | 12 |
| Φ32 | 6.5 | 14 | 34 | 44 | 50 | IhoΦ5.1, OpoΦM6×1x8 Ijinle;Counterbore ihoΦ8x6 Ijinle;(2-ẹgbẹ) | M10x1.5 | 19 | 10 | 30 | 16 |
| Φ40 | 6.5 | 14 | 40 | 52 | 58 | IhoΦ6.8, OpoΦM8×1.25x10 Ijinle;Counterbore ihoΦ9.5x8 Ijinle;(2-ẹgbẹ) | M10x1.5 | 19 | 12 | 30 | 16 |
| Φ50 | 8 | 18 | 48 | 62 | 71 | IhoΦ6.8, OpoΦM8×1.25x10 Ijinle;Counterbore ihoΦ11x8.5 Ijinle;(2-ẹgbẹ) | M12x1.75 | 25.3 | 12 | 39 | 20 |
| Φ63 | 8 | 18 | 60 | 75 | 84.5 | IhoΦ6.8, OpoΦM8×1.25x10 Ijinle;Counterbore ihoΦ11x8.5 Ijinle;(2-ẹgbẹ) | M12x1.75 | 25.3 | 12 | 50 | 20 |