I need to replace a caliper on my 2003 Mach 1. So I had the parts delivered but forgot to get some extra copper washers "just in case." I am not the mechanic most of you guys are so I always get extras if, when, I screw up. Went to AZ and told the sales represented what I needed. Got the deer in the headlights look. He said he didn't have any copper washers. I asked him if he was sure and he said no copper. He took me to the rack of washers - flat, split, locking - but no copper. I told him it was a common part and he must have some. Went to the computer, entered my Mustang's info and no copper washers. He showed me the screen of a box of assorted washers and said no copper. I politely pointed out where on the screen it said "copper." Oh. Of course he couldn't find them in the back. He gave the store manager the Dorman part number and we found them on another rack. I bought the last pack. I thanked them both and proceeded to Advance Auto to get an extra pack.
Same deer but now I had a Dorman number and found the washers myself. Got the last pack.
You gotta know what you need. Hope everyone is well.