NC30 rear sprocket bolts size

[jo]

Before we attempt this and encounter a snapped bolt, what size are they as standard? I can pick some up from work..
cheers.

[speedy231278]

I think the OE ones are special because the head has a flat on one side that locates against the rear of the sprocket carrier (think of it being a rather exaggerated 'D' shape). There's not a head on them that you can tighten, they simply rely on the two flats locking together. You might get away with grinding the head of a standard bolt to suit, but I don't know if there might be clearance issues. I assume Honda made the heads flat for a reason.... Anyway, the fiche doesn't state the bolt size, but lists the nut as 8mm, so that gives half the answer, if that's any help!

Found a pic to explain:

[porndoguk]

M8 standard pitch, the nuts are jap m8 (14mm hex) flange head,

However you can use the equivilant m8 (13mm hex) nyloc nuts on reassemble,

As for the studs i had kayla machine some stainless bolt heads down as to not interfere with the clearance.

With a grinder youll be good but would take a while to file down by hand.

M8 25mm

[thunderace]

M8 standard pitch, the nuts are jap m8 (14mm hex) flange head,

Jap M8 are 12mm hex

[porndoguk]

M8 standard pitch, the nuts are jap m8 (14mm hex) flange head,

Jap M8 are 12mm hex

Arrr dammit 1mm the otherway, i had forgoten all my bolts are now european sizes.

[jo]

Ta for the replies, I'll just get the standard ones if needed. Not gonna arse about with them! lol