Standard Schlage cylinders will not fit in Yale locks, but Schlage does offer special retrofit cylinder that, when ordered, can fit into specific Yale locks. See below for retrofit options.
| Schlage Retrofit Cylinders | |
| Yale 5300LN, 5400LN Series Levers | |
| Cylinder Mechanism | Complete Cylinder |
| Conventional | 24-147 |
| Primus | 20-747 |
| Primus XP | 20-747 XP |
| Primus UL437 | 20-547 |
| Primus XP UL437 | 20-547 XP |
| Schlage Retrofit Cylinders | |
| Yale 5300, 5400, 6200 Series Knobs | |
| Cylinder Mechanism | Complete Cylinder |
| Conventional | 24-123 |
| Primus | 20-723 |
| Primus XP | 20-723 XP |
| Primus UL437 | 20-523 |
| Primus XP UL437 | 20-523 XP |
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