Can anyone tell me if the bolts that hold the steering arms to the spindle are specially made or can I get suitable replacements from a good hardware store?

I am doing a complete front suspension rebuild and conversion to disc brakes on my 67 firebird and somehow tossed the original steering arms in the trash! I ordered new arms from Ames but no one has replacement bolts... Does anyone have advice or even a set of originals in good shape they would be able to sell?

thanks
my internet connection has been down due to storms (was out of power for a week too) so I can't check this forum a lot, will definitely check it tomorrow-