| Screw Thread | M2.5 | ||
| D | 2.5 | ||
| P | 0.45 | ||
| A | Max | 1.35 | |
| A | Min | 0.45 | |
| C | Max | 0.25 | |
| C | Min | 0.1 | |
| Da | Max | 3.1 | |
| Dw | Grade A | Min | 4.07 |
| Dw | Grade B | Min | 3.95 |
| E | Grade A | Min | 5.45 |
| E | Grade B | Min | 5.31 |
| K | Nominal | 1.7 | |
| K | Grade A | Max | 1.825 |
| K | Grade A | Min | 1.575 |
| K | Grade B | Max | 1.9 |
| K | Grade B | Min | 1.5 |
| K1 | Grade A | Min | 1.1 |
| K1 | Grade B | Min | 1.05 |
| R | Min | 0.1 | |
| S | Max | 5 | |
| S | Grade A | Min | 4.82 |
| S | Grade B | Min | 4.7 |