[Csch713]

I am constantly stripping the bolts that hold on my rotor. Both the torx t25 ones and the 3mm hex ones from Shimano. (I have XT discs, but I lost one of the stock rotor bolts, and got a t25 from a friend) I was wondering if it would be possible to get hex rotor bolts with bigger heads (4mm or 6mm). But then I might not have enough clearance between the bolt head and the frame. And no matter how hard I try not to, I always end up stripping the 3mms and the t25s, or not getting them tightened enough, and having them come loose while riding.
And advice/suggestions would be appreciated.

Thanks, Chris

 

[RhinofromWA]

Originally posted by Csch713
I am constantly stripping the bolts that hold on my rotor. Both the torx t25 ones and the 3mm hex ones from Shimano. (I have XT discs, but I lost one of the stock rotor bolts, and got a t25 from a friend) I was wondering if it would be possible to get hex rotor bolts with bigger heads (4mm or 6mm). But then I might not have enough clearance between the bolt head and the frame. And no matter how hard I try not to, I always end up stripping the 3mms and the t25s, or not getting them tightened enough, and having them come loose while riding.
And advice/suggestions would be appreciated.
Thanks, Chris

On my bikes I have the Torx bolts. They normally came stock. Never stripped them though I have srtipped the hub body...so be carefull

I have allen head bolts....use more caution with these for torque.

I even picked up regular bolts (from Lowes Hardware) for a new wheelset. Lowes doen't have much for Metric bolts so I didn't have a great selection (read: I had one or no choice) Still check your clearance closely....I shaved some paint off my RS Judy fork just recently :

More important is the thread and length of the bolt.

PS- Use Locktite if they are coming loose. Or Teflon tape on the threads etc. Then you just have to snug them....

 

[johnbryanpeters]

It seems to me that it's time you purchased and learned to use a torque wrench - that would probably address the loosening problem.

Watch your tools. Allen wrenches, in particular, tend to round off at the edges, after which they'll damage the bolt heads. You can grind a wrench down if you avoid overheating it, or buy a new one.

Do not use ball ended Allen wrenches for applying high torque, it's an invitation to damage. In fact, don't use them at all if you can use an ordinary Allen wrench. I wince every time I see a mechanic using them.

For disks in particular, do not use common hardware. The manufacturers carefully specify hardness and other characteristics, and the results of a front brake failure can become too ugy to contemplate.

J

 

[RhinofromWA]

Originally posted by johnbryanpeters
For disks in particular, do not use common hardware. The manufacturers carefully specify hardness and other characteristics, and the results of a front brake failure can become too ugy to contemplate.

J

Really? I am 300lbs and I cooked my brakes at the ID nationals and the bolts are no worse for wear. In fact I have been riding withthe bolts for over 2 years. I have never broken or damaged a bolt in the 4 years I have had disk brakes. I would think for most people this really isn't a problem. Make sure they are steel and if you are worried a better grade....but I don't see a problem with it.

 

[fonseca]

He's not selling any right now, but these have been on ebay quite a few times, and look to be very high quality. Sill only 3mm allen though. You might email him.

I have yet to strip a torx bolt, but I always use a torque wrench on mine.

 

[mrbigisbudgood]

If your using Button Head Cap Screws, like shown above, they will always be 3mm for the 5mm thread,

Get a set of Socket Head Cap Screws with shoulders, they'll work just fine.

click me

 

[RD]

try these guys:

www.boltdepot.com

http://www.boltdepot.com/product.aspx?cc=25&cs=82&cm=19&cd=1316

You will find what you need here. If you were ever interested in Ti bolts, go to www.racebolts.com