Yale 500 Series
Recently a I got a pin tumbler Yale lock which is from a new series “500”. Yale locks, though sometimes can be a pig to pick but most of the time will pick relatively easy
Or so I thought.
The key didn’t seems to have a very special bitting so I started picking and after 15 mints moved to the HPG and bumping and since that didn’t work either and I decided to see what’s inside.
They were 4 nasty mushroom pins and an anti drill one. Those pins are very similar to the Corbin ones.
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The inside pins holes have carves insdie.
The pins will drop very low into the plug which is unusal as they don’t normaly do that.
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All in all it looks like a very good lock and it is very hard to pick.
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Raf's lockpicking world 
Excellent material! I’m curious what skill set you finally used on the Yale? Thank You again for sharing ๐ -Dawson
March 20, 2013 at 1:03 pm
The counter milling inside of the pin chambers is what makes them such a difficult pick. Sometimes they may just pop open, others are a nightmare.
The new yale BS antisnap is also a very tough pick
April 20, 2013 at 4:19 pm
Yales have become particularly difficult to pick since they introduced the counter-milling inside the bores.
SPPing is much harder however the EPG still manages to open them reasonably well.
June 2, 2013 at 4:24 pm