Conventional Cylinders - A conventional cylinder is one that requires some breakdown of the lock in order to be removed.
These are the most commonly used cylinders sometimes called key-in-lever...
Choose the appropriate full size control key from the selection below.
Classic Conventional Key Blanks and Cut Keys
Part Number
Description
Key Blanks
35-056
Control
Standard bow, embossed both sides
35-076
Standard bow, unembossed both s...
The Schlage full size construction control key part number is 48-056-ICX. The ICX suffix will change depending on if the key is for a new job or existing job.
New jobs: Specify "ICX"
E...
Check the following:
Debris in the cylinder
The cylinder cap could be too loose
Incorrect pinning of the cylinder
The cylinder plug is not returned to the neutral position with the cylinder s...
A control key is required to install or remove an interchangeable core from a housing or lever. The control key is identified by having "CONTROL" stamped on the bow. How to install and remove an i...