I have a 2006 Grande Punto and have bought new discs and pads. When trying to remove the old disc, I found the T30 bolts stripped. An original replacement is an M6 countersunk by 14 mm. I would like to put in a hex instead. My local hardware shop has an M6 but 16 mm. So my question is: Anyone know if it will fit or will it be too long?

I don't want to remove any of the damaged bolts unless I know the 16 mm will fit or I have ordered some 14 mm to replace the original ones.

Thanks.

Your best off replacing them with original items

They are counter sunk flush to enable the wheel to for against the disc
If the new bolts sit proud of the disc at all your wheels won't fit correctly
Is they are the one I'm thinking off?

Falkirk said:

I have a 2006 Grande Punto and have bought new discs and pads. When trying to remove the old disc, I found the T30 bolts stripped. An original replacement is an M6 countersunk by 14 mm. I would like to put in a hex instead. My local hardware shop has an M6 but 16 mm. So my question is: Anyone know if it will fit or will it be too long?

I don't want to remove any of the damaged bolts unless I know the 16 mm will fit or I have ordered some 14 mm to replace the original ones.

Thanks.

Click to expand...

You could shorten the new bolts. Run a nut on, cut with hacksaw, clean up with a file ( for 2mm I'd just use file) then taking the nut off will correct any minor thread damage. Better short than long. These screws only hold the disk in place while fitting the wheel, once wheel is on the clamping by wheel bolts takes all the load.

Somewhere on here we were discussing these bolts and
Jack_who added a link to the ones stocked by screwfix

Charlie

Thanks for the input. It is not really a big deal as I can just buy the M6X14 mm, which I think I will be doing. It was just a matter of if anyone knew for sure, if the two extra mm. would fit. I surely can't be bothered altering the longer ones

Typically all those wee countersink screws do is stop the disc "flopping about" when the wheel is removed. As g8rpi says above they are not involved in any other functional way in the assembly so you could actually just not fit them as the wheel securing bolts/studs (depending on vehicle) hold everything together.

I'm trying to remember but can't get it to "surface" that there was a manufacturer who held drums and discs to the hubs with spring clip speed washers which simply pushed over the wheel studs (so it wouldn't have been suitable for cars with wheel bolts like ours). Often these flimsy spring steel washers would break when you removed them to fit new discs. I don't think anyone bothered renewing them and just relied on the wheel holding the disc in place. There's no problem in doing this, it's the wheel that does the retaining.

Screwfix link was for the rear drums..

Same bolt..?