Whenever anyone needs grade 8 hardware or really anything like grinding discs, screws, nails.... etc dont waste your money at HomeDepot or Lowe's. Go to K Surplus in National City just off the 5 and civic center Dr. Today I went there and got five 1/2" x3" grade 8 bolts, washers, nuts, some odds and ends and it cost me 4.00..... FOUR BUCKS!
After I got home I realized that I forgot a few things so I didn't want to drive all the way back over there so I went to home depot and bought 2 more grade 8, 1/2" bolts, four little 1/2 inch washers (that ended up NOT being 1/2 inch after I got home and opened the bag) and 2 small rotozip grinding discs. Cost me 13.00. LAME. Just thought I'd share that tid-bit