Help finding crank pulley Bolt

[Isaiah92260]

My gosh this is a real WTF moment to the Previous Owner!! -,-
So I had a Old Chevy dude looking at my motor today, I was telling him how to previous owner told me that I needed a new harmonic balanced, so the guy was taking a look at the slack the pulley had on there, when he noticed, "jesus"! He said "Dude, what the heck, your pulley doesn't even have the Bolt and washer on there"!!!!! Live been looking online and for some reason I can't find it..... Does anyone know where I can find the Crank Pulley Bolt and washer? I've already gone to NAPA and they didn't even have it... I have a 1967 250ci Straight 6. Thanks guys!