Another '63 upper A-arm question

[Jack H.]

What is Correct Novmeber 1963 Upper A-Arm Bushing retainer bolts, RSC, or these head markings and size?
Thanks Jack

[Joseph S.]

Re: Another '63 upper A-arm question

Jack, They are definitely a grade 8. That circle with the 6 lines is a good one. We have also seen A or M with 6 lines. I would think that an RSC could be correct also since this was a regular supplier to Chevrolet at the time.

[Jack H.]

Re: Another '63 upper A-arm question

Thank Joe,

The markings on some of my baggies are not very readable from 20+ years ago when I disassembled it. Perm markers do wear off glad bags...live & learn...back to it

Jack

[Gary B.]

Re: Another '63 upper A-arm question

Jack,

I’ve had the same problem with my black Sharpie writing disappearing from my baggies after 15 or 20 years being stored in a drawer with lots of bolt baggies. Fortunately, for many of the chassis bolts I removed from my ‘66 I made notes and created drawings of the headmarks. This is what I documented for the upper pivot shaft end bolts for my ‘66. I didn’t notate things that I could have, such as were the WB bolts on one side of the car and the RSC bolts on the other.

Gary

IMG_8888.jpg

[Jack H.]

Re: Another '63 upper A-arm question

Thanks Gary,

Every little bit helps & will go into my notes.

Jack