Sometimes you might see some exposed copper at the crimping area of the terminal in fuse holder part number 01500520H.
Regarding this issue, please see the response from Littelfuse provided below:
It’s okay to see a bit of exposed copper, and it can still be used normally.
The terminal is made from C194 copper, which is 0.3mm thick and pre-plated before being stamped into shape.
The exposed copper happens because of the 14AWG wire crimping process, and it’s a normal part of the process.
Applicable part numbers
18-01500520H-ND
01500520H