What is this type of pin called?

[cantunamunch]

#CFshoerepair
#whengluedoesnthold

 

[scott43]

Is it threaded inside?

 

[cantunamunch]

Is it threaded inside?

Nope. Sorry I didn't have a caliper handy, 1.8 mm round section x 8.5 mm long.

I totally expect it's a shoe thing with a specific name - I just didn't expect 3 of them to come up into my heel as I put my foot down at the end of the ride.

 

[princo]

Those are called split or bifurcated rivets. You can check with your local cobbler. They usually have them and you can bring you your shoes and find the appropriate size that will work with them.

https://www.rivetsonline.com/rivets/split-rivets-bifurcated-rivets#1