| Flat/Thick washers | ||
| Model | Equivalent material | Surface treatment |
| WABTY | S45C | Ferriferrous oxide protective film |
| WABTN | S45C | Electroless nickel plating |
| WABS | SUS303 | - |

| Type | D | P | T | C |
| WADTY WADTN WADS | 4 | 2 | 1,2 | below 0.2 |
| 5 | 2,3 | 1,2 | ||
| 6 | 2 | 1,2 | ||
| 3,4 | 1,1.5,2 | |||
| 8 | 2 | 1,2,3,5 | ||
| 3,4,5,6 | 1,1.5,2,3,5 | |||
| 10 | 2,3 | 1,2,3,5 | ||
| 4,5,6,8 | 1,1.5,2,2.5,3,5 | |||
| 12 | 3,4 | 1,2,3,5 | ||
| 5,6,8,10 | 1,1.5,2,2.5,3,5 | |||
| 13 | 4,5,10 | 1,2,3,5 | ||
| 6,8 | 1,1.5,2,2.5,3,5 | |||
| 14 | 4,5 | 1,2,3,5 | ||
| 6,8,10 | 1,1.5,2,2.5,3,5 | |||
| 15 | 4,5 | 1,2,3,5 | ||
| 6,8,10,12 | 1,1.5,2,2.5,3,5 | |||
| 16 | 4,5 | 1,2,3,5 | ||
| 6,8,10,12 | 1,1.5,2,2.5,3,5 | |||
| 20 | 4,5,8,12,16 | 2,3,5 | below 0.5 | |
| 6,10,15 | 1.5,2,2.5,3,5 | |||
| 25 | 6,8,10,12,15,16,20 | 2,3,5 | ||
| 30 | 8,10,12,15,16,20,25 | 2,3,5 | ||
| 35 | 10,12,15,16,20,25 | 3,5,10 | ||
| 40 | 10,12,15,16,20,25,30 | 3,5,10 |
