I see your looking to get a replacement key for your tool box key. I found it very easy by visiting Sears Parts Direct.com website and as long as you have the full model number, you can purchase the item online. I attached the link below, I hope this helps!!!!!
Yes you can get new keys for your tool box. Most of the Craftsman tool boxes are made for us by Waterloo Inc. The model number on the box should start with 706. If it does you will need the number off the lock face and call the customer service number below to get replacement keys.