Locksmithing/Schlage keyways


Hi Dan,
Can you tell how do you determine the differences between Schlage keyways. Like C, E, F etc. Do they have different shapes to prevent one key from entering another?  Is there a chart I can get to determine the difference by looking at it?

Ilco catalog page
Ilco catalog page  
They all use the same standard bow, the head of the key.

Schlage used to have a chart on their site showing all the different keyways. Schlage.com

You can also download the Ilco key catalog, the North American cylinder keys.

To compare them, put two keys together and look at them from the tip.

You can see how they differ.

They all have different grooves in them.

Usually an E key won't go in a C cylinder.

However, they do make cylinders that will accept both keys.



All Answers

Answers by Expert:

Ask Experts


Dan Terrigno


I can answer questions about commercial locks, card access systems, locksmithing except for cars, safes & safe opening, video surveillance and master key systems


35 years as a locksmith, security system designer and installer, trouble shooting and repair of all manner of security related equipment

Associated Locksmiths of America, Safe & Vault Technicians Association

Attended Miami University, Kent State University, continuing education through the Associated Locksmiths of American

Awards and Honors
Certified Master Locksmith. Certified ALOA instructor.

Past/Present Clients
Numerous Fortune 500 companies, DOD, and other governmental agencies

©2017 About.com. All rights reserved.