Originally Posted by
flyingagin
Good info George. I have been able to find grade 8 bolts in the hardware store, both the big box and Ace, Never thought about washers.
Ken
Grade 8 bolts and hardware are usually located in the automotive hardware bins (at least here with Lowes). Usually the selection is better at some of your better auto parts stores that have a good sized selection. Automotive grade washers with 5/16" center hole is usually a good size, and the outer diameters along with the thickness for a flat washer should be thick enough I'd think for model prop use, but YMMV (your mileage may vary).