I am pretty sure there are none.
As I can recall, one is on the final bridge that leads to the end, one is in one of the bolt-crank rooms, one is in the arena styled room behind a pillar, and the other two are in the circle area of the bolt cranks. It took me forever to finish this one because I could'nt find the one at the bridge. XD. good Luck to you.
There are 40 platinum bolt in this game
I'm unaware of any collectible in the game called a "helicopter bolt"
finish the game then on your next play through you will get multipliers
Aside from the Hoverboard track, i only know of a glitch in Planet Quartau that occurs during the giant clank fight.
Go to the place where there is a robot captain quark. there are 15,000 bolts on that planet.
you get 1 bolt for doing something in da big star ship
Revisit the subconscious thing and do the almost impossible time challenge.
at the begenning of the level were the two shock solgers are the stack of creates next to them there .clime it then you should see it
A ratchet and socket on the bolt that holds the crank pulley on.A ratchet and socket on the bolt that holds the crank pulley on.
complete the game and you will go on to challenge mode, where you already have the bolt multiplier.
It is located on the Zeldrin starport (I think, if not, it's the place where Quark supposedly dies) if you just keep going forward, instead of going straight to Quark and Skrunch, and keep following that path, you'll eventually come to the end and find the bolt grabber (Combination armor magnetizer and box breaker [from Going Commando.])