Early pedals had these as I recall. Not got any pictures but let's see eh
I had a pair in 9/16 bitd. Soon lost the pins though as the pedals got hammered
To tell a story one of said pins resurfaced in the 90's out of the skin on my shin
True story
must of been stuck in my shin bone for years and let go . I had a horrible lump until then that cleared up after leaving a lovely scar