common bolt size/lengths

[speed]

hi all

is there any size bolts that reno liked to use alot?

i want to buy some stainless steel bolts so everytime i work on the car i can add new bolts.

maybe someone can make a list of what fits were etc

im planning on getting some from ebay unless you have some better options,links

thanks jamie

[speed]

also if i need high tensile bolts for places too please