by RedE » 30 Mar 2017 13:50
First I d like to let you know that your cores are made by Corbin Russwin rather than Sargent. There's a big difference between the two!
Now, the Corbin Pyrmaid cylinders you have use a special pin kit made just for them. Maybe you could use universal pins in them, but I have never worked on such cores, so I couldn't tell you. Keyblank wise, good luck finding any... your only avenue of acquiring them would probably be eBay. As far as the regular cores go, I see a 59D2 keyway, so if they're all that, then keys will be easy to get for them. Universal pins work OK in those cores, but they're not quite as smooth and long lasting as the originals.
Check out Corbin's cylinder manual and Pyramid manual when you get a chance. They're very valuable resources. And Glenn over at Corbin tech support has been really helpful when I've needed extra info.
Good luck in your endeavour!