1989 Mercruiser 3.7 L stater removal

[karayj]

I’m trying to attach a polar and their three holes I’m convinced it’s 3/8 x 20 thread
Would someone know by chance the thread size of the three holes on the stater pulley. I’m trying to figure out what the thread size is rather than go to Home Depot and bring back 15 bolts.

 

[alldodge]

If it's 3/8 then it's either 16 or 24 threads per inch
If it's close to 20 then it's metric which I doubt

Being a starter bolt I would guess 16

Looking at parts breakdown it is 16 thread (item 2)
https://www.mercruiserparts.com/bam/subassembly/30924/908/10

 

[Dubed]

If it's 3/8 then it's either 16 or 24 threads per inch
If it's close to 20 then it's metric which I doubt

Being a starter bolt I would guess 16

Looking at parts breakdown it is 16 thread (item 2)
https://www.mercruiserparts.com/bam/subassembly/30924/908/10

Stator, not starter.
He's trying to remove the alternator/flywheel/pulley (whatever label you want to give it, lol).
I believe they are 3/8-16 but not quite sure