sick bike parts shift kit ID question

Hey all, well i have the sick bke parts shift kit and i need to know the size of a particular part.

there is the silver colar that sits around the drive shaft and has an allen headed screw/bolt in it to be tightened down and hold the collar in place which in turn stops the drive shaft from moving left and right during riding the bike

this bolt/screw has come out on mine and i need a replacement.

I've done some measurements it's threaded parts are 9mm long and 7mm wide. But i believe it's imperial and i'm unsure exactly what imperial bolt i need to replace it.

Thankyou Ghost0

shame is i've been searching all morning for some place in sydney to have one :/ no luck so far.

found some, shame i'll have to wait until tomorrow