what size bolts for six hole disc rotors?

[dirty_d]

does anyone know what size the disc rotor bolts are for the standard 6 bolt rotors? i would think they are metric but i cant find the actual size of them online anywhere, they only sell them without any specs, i need the diameter and thread pitch.

 

[dirty_d]

anyone?

 

[xyster]

6mm by 0.23" thread pitch.

Just kidding. I have no idea, but didn't want you to feel as if you were hanging out all alone in this big, vacant thread.

 

[Beagle123]

Hi Dirty:

This is the size: M6 - 0.8

I don't know what it means. But that's it.

 

[Mark_A_W]

Oh friggin hell, the Metric system is so easy..don't you have Jap or Euro cars in the US?

6mm diameter, 0.8mm pitch. They are probably 10 or 12mm long, I dunno, it would depend on the hub.

You would ask for M6 x 10 at a bolt store.

This is the way all metric threads are properly described, but you will sometimes hear larger ones described as coarse or fine. The standard one is always coarse. But really they should be described by dia and pitch.




The sooner the Imperial/English system dies in the ONLY COUNTRY STILL USING IT the better...GRRR.

 

[dirty_d]

ok cool i saw that size at the hardware store when i went there, how did you find out the size by the way, did you already have some of the bolts and fit it to a corresponding nut of a known size?

 

[knightmb]

The sooner the Imperial/English system dies in the ONLY COUNTRY STILL USING IT the better...GRRR.

I agree, but we still have a generation that refuses to let it go. I'll be glad to finally get drinks in liters instead of gallons,quarts,pints,etc. No more 5/8 wrench this and 3 and 7/8 inch that. The metric is so much better. But I'm still waiting for them to quit pricing gas per gallon. I still use MPH on my CA because I hate having to convert everything from mph to kph as of yet since all the speed limit signs are still mph.

One day....

 

[fechter]

I don't know if there's a standard, but on my scooter, the bolts were 4mm.

 

[Beagle123]

Oh friggin hell, the Metric system is so easy..don't you have Jap or Euro cars in the US?

The sooner the Imperial/English system dies in the ONLY COUNTRY STILL USING IT the better...GRRR.

If it makes you feel better, I don't know what 6-32 means either.

dirty, I just took one off mine and matched it to a bolt in a metric set I have in the garage.

 

[Mark_A_W]

My understanding is it means No. 6 size, 32 threads per furlong or something

 

[dirty_d]

6-32 means the diameter of the screw is ((6 * .013) + .060) inches, and there are 32 threads per inch 10-32 would be (10 * .013) + .060 inches in diameter. wacky isn't it, they follow a logarithmic scale, so an increase of 1 in size doubles the tensile strength of the screw.

 

[dirty_d]

are you sure they aren't M5 .80 pitch? i cant find M6 made in any pitch besides 1.00 pitch.

 

[Mark_A_W]

Actually, you are right.

M4 x 0.7
M5 x 0.8
M6 x 1.0

They look like M5 to me. M6 is HUGE.

Hang on, I'll pull one out of my unused wheel.

 

[Mark_A_W]

Ok, I just checked, on my Pivot hub and Shimano hub they are M5 x 0.8.

Sorry I didn't twig earlier (I should have, I put thread details in CAD models all day long).

Mark

 

[dirty_d]

ok cool, thanks for the info.