Funny situation at work today...
I'm an engineer. My customer calls, tells me that [some part] of my [widget] isn't rotating. (And it's supposed to.)
Now, a couple months back we lengthened the shoulder on the bolt, to make room for some felt washers. The old shoulder was 5mm, the new is 7mm and each of the 2 washers is 1mm. So... YEAH: They should FIT!
So I ask my plant: Did you use the new bolt?
We measure the bolt shoulder: 5mm
I tell the plant: It looks like the old bolt.
Plant: We can ASSURE YOU we used the new bolt. We stopped using the old bolt in March, all of the new parts have the new bolt.
I look and see that he part was made in APRIL. (With the wrong bolt.)
Then another plant guy sends me an email confirming what the first one said: "Yeah, we definitely used the new bolt."
At which time the following picture started circulating around the office:
After sending them another picture, showing both the manufacturing date AND the measurement of the bolt, about an hour later we get an email that began:
"After further investigation..."