What designer did Nuts and Bolts cologne and aftershave bottles...  

Massimo Vignelli
Massimo Vignelli
http://www.sllab.net/arslonga/archives/00000252.html

Thanks for that spot on link...
One more question: The aftershave lotion has a flat top and the cologne has a rounded top. Were there any other shapes in the original set, say for a lotion? And I just have to ask: were there any nuts, or just the bolts? They are a whole lot of fun just to have sitting on my counter top. They have some aftershave and cologne left in them and even after all these years both still smell pretty good.

I think this is the full line
I think this is the full line
http://www.vignelli.com/vignelli/home/packaging/bolts.html

Drat!
Those nuts look like soap. They could be very difficult to find!

I have had all three bolts/sc...
I have had all three bolts/screws at various times. Have never come across any of the nuts....I do believe that you are correct that they are soaps. Best bet would be to keep an eye out on the Ebay. I have never looked for them there in earnest...so you might get lucky.

I HAD
all of them in the period, the bolt is soap on a rope...