ASME B18.2.4.1M Metric Hex Nuts
| Nominal Nut Dia. and Thread Pitch | Width Across Flats, S | Width Across Corners, E | Thickness, M | Bearing Face Dia., Dw | Washer Face Thickness, C | ||||
|---|---|---|---|---|---|---|---|---|---|
| Max | Min | Max | Min | Max | Min | Min | Max | Min | |
| ANSI B18.2.4.1M - M1.6 × 0.35 | 3.2 | 3.02 | 3.7 | 3.41 | 1.3 | 1.05 | 2.3 | ... | ... |
| ANSI B18.2.4.1M - M2 × 0.4 | 4 | 3.82 | 4.62 | 4.32 | 1.6 | 1.35 | 3.1 | ... | ... |
| ANSI B18.2.4.1M - M2.5 × 0.45 | 5 | 4.82 | 5.77 | 5.45 | 2 | 1.75 | 4.1 | ... | ... |
| ANSI B18.2.4.1M - M3 × 0.5 | 5.5 | 5.32 | 6.35 | 6.01 | 2.4 | 2.15 | 4.6 | ... | ... |
| ANSI B18.2.4.1M - M3.5 × 0.6 | 6 | 5.82 | 6.93 | 6.58 | 2.8 | 2.55 | 5.1 | ... | ... |
| ANSI B18.2.4.1M - M4 × 0.7 | 7 | 6.78 | 8.08 | 7.66 | 3.2 | 2.9 | 6 | ... | ... |
| ANSI B18.2.4.1M - M5 × 0.8 | 8 | 7.78 | 9.24 | 8.79 | 4.7 | 4.4 | 7 | ... | ... |
| ANSI B18.2.4.1M - M6 × 1 | 10 | 9.78 | 11.55 | 11.05 | 5.2 | 4.9 | 8.9 | ... | ... |
| ANSI B18.2.4.1M - M8 × 1.25 | 13 | 12.73 | 15.01 | 14.38 | 6.8 | 6.44 | 11.6 | ... | ... |
| ANSI B18.2.4.1M - aM10 × 1.5 | 15 | 14.73 | 17.32 | 16.64 | 9.1 | 8.7 | 13.6 | 0.6 | 0.3 |
| ANSI B18.2.4.1M - M10 × 1.5 | 16 | 15.73 | 18.48 | 17.77 | 8.4 | 8.04 | 14.6 | ... | ... |
| ANSI B18.2.4.1M - M12 × 1.75 | 18 | 17.73 | 20.78 | 20.03 | 10.8 | 10.37 | 16.6 | ... | ... |
| ANSI B18.2.4.1M - M14 × 2 | 21 | 20.67 | 24.25 | 23.36 | 12.8 | 12.1 | 19.4 | ... | ... |
| ANSI B18.2.4.1M - M16 × 2 | 24 | 23.67 | 27.71 | 26.75 | 14.8 | 14.1 | 22.4 | ... | ... |
| ANSI B18.2.4.1M - M20 × 2.5 | 30 | 29.16 | 34.64 | 32.95 | 18 | 16.9 | 27.9 | 0.8 | 0.4 |
| ANSI B18.2.4.1M - M24 × 3 | 36 | 35 | 41.57 | 39.55 | 21.5 | 20.2 | 32.5 | 0.8 | 0.4 |
| ANSI B18.2.4.1M - M30 × 3.5 | 46 | 45 | 53.12 | 50.85 | 25.6 | 24.3 | 42.5 | 0.8 | 0.4 |
| ANSI B18.2.4.1M - M36 × 4 | 55 | 53.8 | 63.51 | 60.79 | 31 | 29.4 | 50.8 | 0.8 | 0.4 |
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