Rotary 3404 Blade replaces these OEM part numbers:
| Bad Boy | 038300000 |
| Encore | 363291 |
| Ferris | 1521227 |
| Ferris | 5021227 |
| Ferris | 5021227S |
| Ferris | 5101756 |
| Gravely | 00450300 |
| Gravely | 03253800 |
| Gravely | 0450300 |
| Gravely | GDU10231 |
| Great Dane | D18037 |
| Lesco | 050125 |
| Oregon | 91-622 |
| Oregon | 91-633 |
| Oregon | 93-006 |
| Prime Line | 7-04417 |
| Prime Line | 7-04615 |
| Prime Line | 7-04616 |
| Prime Line | 7-04617 |
| Prime Line | 7-04619 |
| Prime Line | 7-04764 |
| Prime Line | 7-04768 |
| Prime Line | 7-04960 |
| Prime Line | 7-06388 |
| Prime Line | 7-06425 |
| SCAG | 48108 |
| SCAG | 481707 |
| SCAG | 482462 |
| SCAG | 482878 |
| SCAG | A48108 |
| Stens | 300-910 |
| Stens | 301-015 |
| Stens | 310-011 |
| Stens | 310-052 |
| Stens | 310-094 |
| Stens | 310-508 |
| Stens | 315-876 |
| Stens | 330-647 |
| Stens | 330-753 |
| Stens | 340-158 |
| Stens | 340-878 |
| Stens | 340-878 |
| Stens | 355-016 |
| Stens | 355-061 |
| Sunbelt | B1SB3404 |
| Toro | 133-2134 |
| Windsor | 50-2148 |
| Windsor | 50-2295 |
| Windsor | 50-4215 |
| Wright | 71440001 |