Hi Matt

Don't know how you are situated for suppliers where you are, but what you need is a thread chaser. It's basically a square bar with different thread files cut into each of the sides on each end.
http://www.hgtv.com/home-improvement/toolbox-thread-chaser/index.html


davy

 

Aka thread file, yeah?

I just discovered them on google. I'm sure my local hardware store has them.

From what I understand there are different kinds of thread files with different pitches. Should I just get a metric thread file and hope that one of the sides has the correct pitch for my application?

 

Take the steering stem to the store with you & match it up.

davy

 

Will do.

Thanks for your help

 

35mm x 1.00 mm pitch is the ducati stem nut thread.

brian.

 

Ten minutes with a small triangular file should fix it up.

 

Thanks for all the help guys.

Thread file sorted it all out.

 

I've had no problems what so ever with the steering stem threads on my 999. I can take the nut off and on all day w/o even the thought of it cross-threading......

 

My OEM steering stem's threads are just fine.

These are aftermarket 30mm offset triples. There was some junk left over from the machining process that I took care of with the thread file and it works fine now.

 

Thread file

If you decide to use a thread file be sure to use a "metric" thread file, with threads is all about the pitch and pitch diameter. Find a file with the same pitch. Go slow! If you use a triangle file (NOT RECONMENDED, it hasn't the thread form) watch that you dont destroy the thread form. The form is where the strength of a thread comes from. Just advice from an old toolmaker. A thread die is the best choice, maintains thread form and the pitch diameter. Check MSC1.com or enco.com for dies and taps. Fast delivery fair prices large selection. No I don't own stock in either.

 

If you decide to use a thread file be sure to use a "metric" thread file, with threads is all about the pitch and pitch diameter. Find a file with the same pitch. Go slow! If you use a triangle file (NOT RECONMENDED, it hasn't the thread form) watch that you dont destroy the thread form. The form is where the strength of a thread comes from. Just advice from an old toolmaker. A thread die is the best choice, maintains thread form and the pitch diameter. Check MSC1.com or enco.com for dies and taps. Fast delivery fair prices large selection. No I don't own stock in either.

Thanks for the tip. I'll definitely bookmark those two sites for future use.

Luckily the thread file was able to take care of my problem. As stated above I ended up removing some excess material that was clinging on from the machining process (looked like the bit that was used to cut the threads had seen one turn too many).