.75" socket head cap screw for NISMO suspension parts

[mph457]

Someone who worked on my Z32 removed the two socket head cap screws from my NISMO HICAS eliminator toe arms. I cannot figure out the exact right size to replace the screws. I have ordered several after checking the thread at O'Reilly's (they did not have the right sizes), but all the M6 screws I order do not fit. I contacted Nissan, and they couldn't tell me and would not sell the screws separately (outrageous that they don't know their own specs).

If anyone could let me know the exact screw I need and/or provide a link, that would be extremely helpful. I had to take the screws off brand new camber arms that I was planning on selling, so I would like to put them back.

Thanks!