try out Tri City Bolts, they have everything from fasteners to nuts and bolts. get some grade 8 shit i guess. they are off of US 19, towards St Pete i believe.
i think they are past East Bay Drive going south on the right hand side of the road. they have the most off the wall shit you never knew existed to your everyday sizes and usage bolts.
__________________
Mechanical Engineer - Naval Surface Warfare Center PCD, Marine Corps. Counter IED Development
USF Formula and Baja racing Alumni/Consultant