What are the teeth on a gear called?

the guy who said "teeth" is correct

Correct term is "splines "



They are called cogs. Years ago, to distinguish between a smooth wheel and one that had teeth, the ones with teeth were called cogwheel. Cogs were not called teeth until around 1930.

TEETH somthing circular with teeth on is called a cog

splines, teeth, cogs, sprocket depending on the part and what country you are from

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