[DonRotolo]

#25 chain has about a 1/4" (0.25") pitch
#35 chain has about 3/8" pitch
Bicycle chain has 1/2" pitch. It is about the size of #35 but lighter.

Any of these have sufficient strength for what you're likely to do with it.

Bike sprockets come from bikes, but there are other 'sports' that use bike chain.