It it's a 14 mm wrench, it's a M10x.1.25 thread; if it's a 12 mm wrench, it's a M8x1.25 thread; and if it's a 10 mm wrench, it's a M6x1.00 thread. As mentioned above any hardware store will have nuts/bolts of these thread patterns for sale. However, Toyota uses the JIS bolts, which have a...