Just got this 3M bolts and tried to attach them yesterday, but they don't work on the CB fiber glass helmet v2 because the grey bolts are way too short. Since the helmet is made of fiber glass you don't have the chance to "press" anything together like the abs helmets. I just found a source on ebay with carriage bolts made of plastic in different sizes.
http://www.ebay.de/itm/Schlosschraube-DIN-603-Kunststoff-Polyamid-6-6-naturweis-weis-PA-Schraube-/301535584540
I will try to use them now because I already modified the hole to the size of the 3m bolts. :/