That was fast. Thanks! Now the mystery is why he had it in his box of car tools.
Interesting, what industries use that type of fastener?
Can't see pic
Can't see pic
PITA : ..... I'm still interested in seeing what the socket looks like.
read my post #11
Chrysler used those type of bolts in 2 sizes to bolt in their radios.
here is one of his pictures https://i.imgur.com/yQIVbT3.jpg