ASME B18.2.4.1M Metric Hex Nut Style 1
ASME B18.2.4.1M Metric Hex Nut Style 1 Dimensions (mm)
| Nominal Dia. | S | E | M | Dw | C | Total Runout of Bearing Surface FIM | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Width Across Flats | Width Across Corners | Thickness | Bearing Face Dia | Washer Face Thickness | ||||||
| Max. | Min. | Max. | Min. | Max. | Min. | Min. | Max. | Min. | Max. | |
| M1.6 | 3.20 | 3.02 | 3.70 | 3.41 | 1.30 | 1.05 | 2.3 | ... | ... | ... |
| M2 | 4.00 | 3.82 | 4.62 | 4.32 | 1.60 | 1.35 | 3.1 | ... | ... | ... |
| M2.5 | 5.00 | 4.82 | 5.77 | 5.45 | 2.00 | 1.75 | 4.1 | ... | ... | ... |
| M3 | 5.50 | 5.32 | 6.35 | 6.01 | 2.40 | 2.15 | 4.6 | ... | ... | ... |
| M3.5 | 6.00 | 5.82 | 6.93 | 6.58 | 2.80 | 2.55 | 5.1 | ... | ... | ... |
| M4 | 7.00 | 6.78 | 8.08 | 7.66 | 3.20 | 2.90 | 6.0 | ... | ... | ... |
| M5 | 8.00 | 7.78 | 9.24 | 8.79 | 4.70 | 4.40 | 7.0 | ... | ... | 0.30 |
| M6 | 10.00 | 9.78 | 11.55 | 11.05 | 5.20 | 4.90 | 8.9 | ... | ... | 0.33 |
| M8 | 13.00 | 12.73 | 15.01 | 14.38 | 6.80 | 6.44 | 11.6 | ... | ... | 0.36 |
| M10 | 15.00 | 14.73 | 17.32 | 16.64 | 9.10 | 8.70 | 13.6 | ... | ... | 0.39 |
| M10 | 16.00 | 15.73 | 18.45 | 17.77 | 8.40 | 8.04 | 14.6 | ... | ... | 0.39 |
| M12 | 18.00 | 17.73 | 20.78 | 20.03 | 10.80 | 10.37 | 16.6 | ... | ... | 0.42 |
| M14 | 21.00 | 20.67 | 24.25 | 23.35 | 12.80 | 12.10 | 19.4 | ... | ... | 0.45 |
| M16 | 24.00 | 23.67 | 27.71 | 26.75 | 14.80 | 14.10 | 22.4 | ... | ... | 0.48 |
| M20 | 30.00 | 29.16 | 34.64 | 32.95 | 18.00 | 16.90 | 27.9 | 0.8 | 0.4 | 0.56 |
| M24 | 36.00 | 35.00 | 41.57 | 39.55 | 21.50 | 20.20 | 32.5 | 0.8 | 0.4 | 0.64 |
| M30 | 46.00 | 45.00 | 53.12 | 50.85 | 25.60 | 24.30 | 42.5 | 0.8 | 0.4 | 0.76 |
| M36 | 55.00 | 53.80 | 63.51 | 60.79 | 31.00 | 29.40 | 50.8 | 0.8 | 0.4 | 0.89 |