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Hi all, I’m sorry if this is a stupid question, but googling unusual shaped nuts doesn’t give me the answer I’m looking for. I have a bolt and nut that I want to remove, but the nut has a shape that I don’t know how to deal with. The nut looks kinda squarish, but the edges are jagged? So the nut has 4 longer points forming the squarish profile, but another 4 smaller points between each edges? Anyone know what exactly am I looking at? Thank you so much.

Edit: I really should have seen this coming. Anyway the linked picture shows the nut I’m talking about.

Edit 2: Let me just fix the link real quick.

https://imgur.com/JOQ0sXf