Timing Cover & Fan Bracket Bolt Identification

Hey guys, the dingus that installed my supercharger a couple years back removed and didn’t give back 3 bolts on the front of my engine. The two on the right are just going into the timing cover, and the one on the left goes into the triangle bracket behind the fan. I “think” the one on the left is a M8, and the 2 on the right are M10, but I don’t know the thread pitch or length they’re supposed to be? The dealer is less than helpful. The three bolts had to be removed and replaced with 3 bolts from the Harrop kit to mount their idler pulley for the SC belt. Does anyone know what bolts I need to go buy, preferably from the hardware store? They’re the ones just below the coolant crossover pipe.