Chevy s10 1996 replacement bolt for harmonic balancer

I was wondering if someone knows the thread size or a bolt i can use to replace the bolt for the harmonic balancer.

Which engine?

The engine is 2.2L 4 cylinder

The big bolt in the middle . . . ?

apparently no longer available . . .

Part Number: 10184919

Fits Beretta, BLAZER , Cavalier, Century, Corsica, Cutlass , Cutlass Ciera, Postal, S10 , Sunfire

BOLT,CR/SHF PUL(M12X1.5X50). BOLT,CR/SHF PUL HUB(M12X1.5X50).

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Yeah the bolt in the middle. Thank you!

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Be sure to buy a hardened bolt.

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Good detective work from db. Definitely discontinued but I seem to have found a few sources googling that part number…

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