Sorry to post in this thread, but a related issue; hope the OP doesn't mind.

In the early '90s, my wife bought an NOS NR crankset for me for my Raleigh RRA (73). I had been using all the NR parts from my original International (73 also) on this. I have not been able to get the crankset to work; it seems to go on fine, clearance is fine but the bolts keep loosening up, and it doesn't run quite true. I never rode it far (< 1/2 mile) when the bolts got loose (driveside mainly).

I just reinstalled the original and its nice and true, never had any bolt loosening problems, etc. The NOS crankset has a "4" in a circle after the Strada 170, so I am guessing maybe 1984? From bicycle classics chart, I would have a 68-SS 112mm spindle in the BB, but would need a 68-SS 114.5mm for this application (BSC thread)?

I assume that if I got the correct spindle, I could use it with my current cups/bearings if I wanted?

Also, I see CPSC mentioned (as in pre- or post-). What is this?