ASME B18.22M Plain Washers
| Nominal Washer Sizea | Washer Series | Inside Diameter, A | Outside Diameter, B | Thickness, C | |||
|---|---|---|---|---|---|---|---|
| Max | Min | Max | Min | Max | Min | ||
| ANSI B18.22M - M1.6 | Narrow | 2.09 | 1.95 | 4 | 3.7 | 0.7 | 0.5 |
| ANSI B18.22M - M1.6 | Regular | 2.09 | 1.95 | 5 | 4.7 | 0.7 | 0.5 |
| ANSI B18.22M - M1.6 | Wide | 2.09 | 1.95 | 6 | 5.7 | 0.9 | 0.6 |
| ANSI B18.22M - M2 | Narrow | 2.64 | 2.5 | 5 | 4.7 | 0.9 | 0.6 |
| ANSI B18.22M - M2 | Regular | 2.64 | 2.5 | 6 | 5.7 | 0.9 | 0.6 |
| ANSI B18.22M - M2 | Wide | 2.64 | 2.5 | 8 | 7.64 | 0.9 | 0.6 |
| ANSI B18.22M - M2.5 | Narrow | 3.14 | 3 | 6 | 5.7 | 0.9 | 0.6 |
| ANSI B18.22M - M2.5 | Regular | 3.14 | 3 | 8 | 7.64 | 0.9 | 0.6 |
| ANSI B18.22M - M2.5 | Wide | 3.14 | 3 | 10 | 9.64 | 1.2 | 0.8 |
| ANSI B18.22M - M3 | Narrow | 3.68 | 3.5 | 7 | 6.64 | 0.9 | 0.6 |
| ANSI B18.22M - M3 | Regular | 3.68 | 3.5 | 10 | 9.64 | 1.2 | 0.8 |
| ANSI B18.22M - M3 | Wide | 3.68 | 3.5 | 12 | 11.57 | 1.4 | 1 |
| ANSI B18.22M - M3.5 | Narrow | 4.18 | 4 | 9 | 8.64 | 1.2 | 0.8 |
| ANSI B18.22M - M3.5 | Regular | 4.18 | 4 | 10 | 9.64 | 1.4 | 1 |
| ANSI B18.22M - M3.5 | Wide | 4.18 | 4 | 15 | 14.57 | 1.75 | 1.2 |
| ANSI B18.22M - M4 | Narrow | 4.88 | 4.7 | 10 | 9.64 | 1.2 | 0.8 |
| ANSI B18.22M - M4 | Regular | 4.88 | 4.7 | 12 | 11.57 | 1.4 | 1 |
| ANSI B18.22M - M4 | Wide | 4.88 | 4.7 | 16 | 15.57 | 2.3 | 1.6 |
| ANSI B18.22M - M5 | Narrow | 5.78 | 5.5 | 11 | 10.57 | 1.4 | 1 |
| ANSI B18.22M - M5 | Regular | 5.78 | 5.5 | 15 | 14.57 | 1.75 | 1.2 |
| ANSI B18.22M - M5 | Wide | 5.78 | 5.5 | 20 | 19.48 | 2.3 | 1.6 |
| ANSI B18.22M - M6 | Narrow | 6.87 | 6.65 | 13 | 12.57 | 1.75 | 1.2 |
| ANSI B18.22M - M6 | Regular | 6.87 | 6.65 | 18.8 | 18.37 | 1.75 | 1.2 |
| ANSI B18.22M - M6 | Wide | 6.87 | 6.65 | 25.4 | 24.88 | 2.3 | 1.6 |
| ANSI B18.22M - M8 | Narrow | 9.12 | 8.9 | 18.80 b | 18.37 b | 2.3 | 1.6 |
| ANSI B18.22M - M8 | Regular | 9.12 | 8.9 | 25.40 b | 24.48 b | 2.3 | 1.6 |
| ANSI B18.22M - M8 | Wide | 9.12 | 8.9 | 32 | 31.38 | 2.8 | 2 |
| ANSI B18.22M - M10 | Narrow | 11.12 | 10.85 | 20 | 19.48 | 2.3 | 1.6 |
| ANSI B18.22M - M10 | Regular | 11.12 | 10.85 | 28 | 27.48 | 2.8 | 2 |
| ANSI B18.22M - M10 | Wide | 11.12 | 10.85 | 39 | 38.38 | 3.5 | 2.5 |
| ANSI B18.22M - M12 | Narrow | 13.57 | 13.3 | 25.4 | 24.88 | 2.8 | 2 |
| ANSI B18.22M - M12 | Regular | 13.57 | 13.3 | 34 | 33.38 | 3.5 | 2.5 |
| ANSI B18.22M - M12 | Wide | 13.57 | 13.3 | 44 | 43.38 | 3.5 | 2.5 |
| ANSI B18.22M - M14 | Narrow | 15.52 | 15.25 | 28 | 27.48 | 2.8 | 2 |
| ANSI B18.22M - M14 | Regular | 15.52 | 15.25 | 39 | 38.38 | 3.5 | 2.5 |
| ANSI B18.22M - M14 | Wide | 15.52 | 15.25 | 50 | 49.38 | 4 | 3 |
| ANSI B18.22M - M16 | Narrow | 17.52 | 17.25 | 32 | 31.38 | 3.5 | 2.5 |
| ANSI B18.22M - M16 | Regular | 17.52 | 17.25 | 44 | 43.38 | 4 | 3 |
| ANSI B18.22M - M16 | Wide | 17.52 | 17.25 | 56 | 54.8 | 4.6 | 3.5 |
| ANSI B18.22M - M20 | Narrow | 22.32 | 21.8 | 39 | 38.38 | 4 | 3 |
| ANSI B18.22M - M20 | Regular | 22.32 | 21.8 | 50 | 49.38 | 4.6 | 3.5 |
| ANSI B18.22M - M20 | Wide | 22.32 | 21.8 | 66 | 64.8 | 5.1 | 4 |
| ANSI B18.22M - M24 | Narrow | 26.12 | 25.6 | 44 | 43.38 | 4.6 | 3.5 |
| ANSI B18.22M - M24 | Regular | 26.12 | 25.6 | 56 | 54.8 | 5.1 | 4 |
| ANSI B18.22M - M24 | Wide | 26.12 | 25.6 | 72 | 70.8 | 5.6 | 4.5 |
| ANSI B18.22M - M30 | Narrow | 33.02 | 32.4 | 56 | 54.8 | 5.1 | 4 |
| ANSI B18.22M - M30 | Regular | 33.02 | 32.4 | 72 | 70.8 | 5.6 | 4.5 |
| ANSI B18.22M - M30 | Wide | 33.02 | 32.4 | 90 | 88.6 | 6.4 | 5 |
| ANSI B18.22M - M36 | Narrow | 38.92 | 38.3 | 66 | 64.8 | 5.6 | 4.5 |
| ANSI B18.22M - M36 | Regular | 38.92 | 38.3 | 90 | 88.6 | 6.4 | 5 |
| ANSI B18.22M - M36 | Wide | 38.92 | 38.3 | 110 | 108.6 | 8.5 | 7 |
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