Flat head hexagonal socket screw

| SIZE | PITCH | dk | k | S | |
| M3 | 0.5 | 6.8 | 1.45 | 1.97 | |
| M4 | 0.7 | 8.5 | 2.05 | 2.85 | |
| M5 | 0.8 | 10.45 | 2.35 | 3.25 | |
| M6 | 1 | 12.65 | 2.35 | 4.05 | |
| M8 | 1.25 | 14.05 | 3.35 | 5.05 | |
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| SIZE | PITCH | dk | k | S | |
| M3 | 0.5 | 6.8 | 1.45 | 1.97 | |
| M4 | 0.7 | 8.5 | 2.05 | 2.85 | |
| M5 | 0.8 | 10.45 | 2.35 | 3.25 | |
| M6 | 1 | 12.65 | 2.35 | 4.05 | |
| M8 | 1.25 | 14.05 | 3.35 | 5.05 | |