Am I okay to use bolts and stuff from the hardware store for stuff like the alternator bracket, holding the pully onto the water pump, etc.? or do i need to buy automotive specific hardware? I'd prefer to go with like ARP or whatever but paying 7 or 8 bucks for 3 or 4 bolts just isnt worth it to me IMO....

 

i wouldn't use hardwear grade bolts. i use grade 8s from tractor supply store for 3.99 a pound.

 

I am not being smart but arent grade8 bolts grade 8 bolts I thought there was a standard and thats why the bolts are stamp they way they are.

 

well you can buy grade 8 bolts from the hardware stores around here usually.....so thats what i was referring to.....
so grade 8 is okay for everything?

 

yes grade 8 bolts from the harware store are the ones you want to buy. they're cheap and should work fine.

 

I don't usually see grade 8's at my hardware store.
Just check the markings on the bolt head, the ones at the hardware store usually have no marks. Grade 2 right?

grade 5 = 3 marks
grade 8 = 5 marks
correct?

 

you got it

 

All grade 8 fasteners will be marked with the 5-slash marks. Those with no markings or just a mfg Id , I would not use for any stress or critical applications.