I searched the forum but didn't see anything obvious addressing this. The pins that hold the rear swing out doors on my aluminess bumpers rusted and stopped working.
I found a replacement at McMaster Carr. The new pin is stainless steel so should not rust and the lead in is a bit longer making insertion, etc. easier.
If anyone is interested:
MMC P/N: 98404A376
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2012 E350 SMB/Quad Van
2021 Chevy Colorado ZR2 Bison
We saw this thread and picture and called our hardware supplier...we are switching to the Stainless Steel pins immediately! Thanks for calling this to our attention...