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🔩Screw Dimensions
DIN912 (Cylinder Head Screw Hex Drive)
| Nominal Size |
Tapping Drill Size |
Head Diameter |
Head Height |
| M1.6 |
1.25 |
3 |
1.6 |
| M2 |
1.6 |
3 |
2 |
| M2.5 |
2.05 |
4 |
2.5 |
| M3 |
2.5 |
5.5 |
3 |
| M4 |
3.3 |
7 |
4 |
| M5 |
4.2 |
8.5 |
5 |
| M6 |
5 |
10 |
6 |
| M8 |
6.75 |
13 |
8 |
| M10 |
8.5 |
16 |
10 |
DIN 7984 (Low Head Cap Screw Hex Drive)
| Nominal Size |
Tapping Drill Size |
Head Diameter |
Head Height |
| M3 |
2.5 |
5.5 |
2 |
| M4 |
3.3 |
7 |
2.8 |
| M5 |
4.2 |
8.5 |
3.3 |
| M6 |
5 |
10 |
4 |
| M8 |
6.75 |
13 |
5 |
DIN 933 (Hexagon Head Screw)
| Nominal Size |
Tapping Drill Size |
Head Width (Across Flats) |
Head Height |
| M3 |
2.5 |
5.5 |
2 |
| M4 |
3.3 |
7 |
2.8 |
| M5 |
4.2 |
8 |
3.5 |
| M6 |
5 |
10 |
4 |
| M8 |
6.75 |
13 |
5.3 |
| M10 |
8.5 |
17 |
6.4 |
| M12 |
10.2 |
19 |
7.5 |
DIN 934 (Hexagon Nut)
| Nominal Size |
Width Across Flats |
Nut Height |
| M3 |
5.5 |
2.4 |
| M4 |
7 |
3.2 |
| M5 |
8 |
4 |
| M6 |
10 |
5 |
| M8 |
13 |
6.5 |
| M10 |
17 |
8 |
| M12 |
19 |
10 |
DIN 125 (Flat Washer)
| Nominal Size |
Inner Diameter |
Outer Diameter |
Thickness |
| M3 |
3.2 |
7 |
0.5 |
| M4 |
4.3 |
9 |
0.8 |
| M5 |
5.3 |
10 |
1 |
| M6 |
6.4 |
12 |
1.6 |
| M8 |
8.4 |
16 |
1.6 |
| M10 |
10.5 |
20 |
2 |
| M12 |
13 |
24 |
2.5 |
| M16 |
17 |
30 |
3 |
| M20 |
21 |
37 |
3 |
DIN 913 (Hexagon Socket Set Screw)
| Nominal Size |
Tapping Drill Size |
Socket Size |
Length Range |
| M3 |
2.5 |
1.5 |
3–12 |
| M4 |
3.3 |
2 |
4–16 |
| M5 |
4.2 |
2.5 |
5–20 |
| M6 |
5 |
3 |
6–24 |
| M8 |
6.75 |
4 |
8–30 |
| M10 |
8.5 |
5 |
10–40 |
| M12 |
10.2 |
6 |
12–50 |