Thru axles threading

[qclabrat]

I need to replace a thru axle. I've reached out the the manufacturer but is there any other way to know the thread pitch?

 

[Patrick]

Robert axle project has axles that are referenced by bike - if you can go that way.
They post the tech specs -
probs do come up if they have two different axles for the same bike....

do you have the old one? pop into post h/w are thread it onto a couple different nuts?

I may have a pitch gauge.

 

[JDurk]

All my thru axles have the information etched or stamped into them somewhere on the part.

Pic for example

 

[JDurk]

Paragon Machine Works has a page dedicated to skewers. Maybe you can narrow it down based on what they have available.

Skewers | Paragon Machine Works

Skewers - 12mm Front and Rear, 15mm Front, SRAM UDH, Syntace and more by Paragon Machine Works

www.paragonmachineworks.com

 

[Piston Honda]

Robert axle project has axles that are referenced by bike - if you can go that way.
They post the tech specs -
probs do come up if they have two different axles for the same bike....

do you have the old one? pop into post h/w are thread it onto a couple different nuts?

I may have a pitch gauge.

RAP also has a print out to determine thread pitch - https://robertaxleproject.com/what-axle-do-i-need/

 

[qclabrat]

Robert axle project has axles that are referenced by bike - if you can go that way.
They post the tech specs -
probs do come up if they have two different axles for the same bike....

do you have the old one? pop into post h/w are thread it onto a couple different nuts?

I may have a pitch gauge.

Yeah, I've been using them. The rear axle was lost, and the axle from my Carver doesn't fit, and Carver's not on the RAP database. I'll try the axle from the Niner next. It's likely either 1.5 or 1.75

 

[Patrick]

Yeah, I've been using them. The rear axle was lost, and the axle from my Carver doesn't fit, and Carver's not on the RAP database. I'll try the axle from the Niner next. It's likely either 1.5 or 1.75

Hit-up @DennisG over at HB Summit. He had a couple carvers back in the day.

 

[w_b]

it’s likely NOT 1.5

 

[qclabrat]

it’s likely NOT 1.75

Why? I'm pretty sure the axles for the Carver and Niner are not swappable so likely one is 1.75. btw, this is for a road bike if it matters.

 

[w_b]

Sorry, I meant likely NOT 1.5. Edited.

1.75 (and 1.25) if M12- is much more common in general.

 

[serviceguy]

Get a thread gauge and measure it? You can also use a caliper to measure the distance between each thread.

 

[skully]

I have a pitch gauge for metric or U.S. if you want ...but you could also try going to a good hardware store and try and "match it up " with nuts or bolts they might have in stock

 

[qclabrat]

Sorry, I meant likely NOT 1.5. Edited.

1.75 (and 1.25) if M12- is much more common in general.

They are actually 1.5, like more than half my bikes. The Niner is 1.75 so maybe 1.25 or 1.0 are less popular? My bikes are a few years old so YMMV.
I was able to chase the threads from the other side the and some grime came out and cleaned out the threads.

 

[w_b]

Today I learned… thanks for the follow up

LOL 16-2/3 TPI try cutting that from scratch

 

[mwlikesbikes]

Today I learned… thanks for the follow up

LOL 16-2/3 TPI try cutting that from scratch

That comes out to about 1.5mm pitch.
I had someone at work try to tell me that a valve stem thread was 4 1/4 tpi, which is about a .235” pitch, which is 6 mm. Amateurs…