Control Arm Bolts & Ubolts

[dznucks]

I am gathering the parts to do a front end rebuild on my '69 and I am trying to find replacement upper control arm bolts and ubolts for the lower control arms.

Is there something special about these bolts/ubolts that would prevent me from not being able to use grade 8 bolts from Grainger or Fastenal? I found them at Classic Parts, but i can get discounts at both grainger and fastenal and can save on shipping(handling) fee.

Does any one know what size these the bolts and ubolts are?

Thanks