Messages

i have a 1969 Z/28 camaro. I was given parts with it. I came across 6 bolts in a zip luck bag. I dont know where or what the bolts go on to.  On the bag is written 33622, L/W 3/8, 300. Can anyone help me out and tell me what they are for and how do i know i have original bolts? I have tons more but these were in a bag the others were lose in a bucket. Thank you for any help.