The right hardware depends on the door
A lock problem can affect staff access, opening routines or the ability to secure a premises. Call to describe the door, lock type and the issue you are seeing.
Commercial locks vary by door and use. Mortice lock cases, cylinders and shutter hardware may need different parts or checks, so it helps to share a clear photo when you make contact.
If you manage several doors, note which one is affected and whether it still locks. The locksmith can discuss suitable next steps with you.
What to mention when you call
Explain the door or lock type if you know it, what has changed and whether the door still locks. For non-urgent enquiries, a photo can help show the hardware.

