The Ford Barn

cederholm · 06-13-2019, 09:20 AM

Hi guys, I have a mildly buggered wheel stud and I need to get a regular nut with the correct thread to make a thread chaser.

Can someone please share the correct size and thread for a 1930 wheel stud?

Thanks,
Carl

Dave in MD · 06-13-2019, 09:41 AM

Carl,
The threads are 1/2 inch by 20 threads per inch. I would buy a die of that size to chase the threads. Also, be very careful that you don't damage the threads more as the lug nuts should be torqued.
Dave

Benson · 06-13-2019, 09:48 AM

Quote:

Originally Posted by cederholm

Hi guys, I have a mildly buggered wheel stud and I need to get a regular nut with the correct thread to make a thread chaser.

Can someone please share the correct size and thread for a 1930 wheel stud?

Thanks,
Carl

I suggest that anyone having lug nut problems, read Vince Falter's web page on lug nuts BEFORE you go further and damage your studs more than they are already.

http://www.fordgarage.com/pages/dangerouslugnuts.htm

This is ONE of the reasons why when buying parts at swap meets and such you need to know WHAT you are buying.

cederholm · 06-13-2019, 10:08 AM

I will read that link, thank you!

I prefer not to run a die as you can really make a mess if it cuts down the missthread. A simple thread chaser that works well for end damage like this is to take a nut and cut a slit in in. Then gently open the slit and slide the nut over the stud, PAST the damaged part. Then, with the threads of the nut and stud perfectly aligned, compress the nut back to it's original shape and BACK it off over the damaged section.

Unless the damage is catastrophic, this should clean the messed up end nicely.

Off to read that post now.

nick c · 06-13-2019, 11:55 AM

You might consider a thread file, its about 1/2" square and about 8" long, with 4 sides, each end has 4 different thread pitches, that equals 8 different pitches. about $12.00, I have one for US threads and one for metric.
carry on

Benson · 06-13-2019, 01:04 PM

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All that it takes is 5 or 6 bad nuts out of the 23 (including the spare!) on the car and after several wheel changes all of the studs can be damaged.

By the way this is a very good reason to refrain from using an impact wrench on wheel nuts.

With impact wrench you will never know that the threads on the studs are being damaged by the cheap lug nuts.

cederholm · 06-13-2019, 01:48 PM

I wouldn't use a impact wrench on any of my cars lugs - new or old. ...and good reminder about the thread file, I think I have one somewhere.

Tom Endy · 06-13-2019, 02:10 PM

Attached article appeared in the Restorer years ago about some poor quality lug nuts that were being sold. I encountered some and found that they could also do damage to the threads on the lugs.

Tom Endy

CWPASADENA · 06-13-2019, 05:44 PM

Put a drop of oil on the threads before you install the lug nut.

This will do wonders for keeping the threads in good condition.

Also a little oil will allow you to get a more consistent torque as you are not tightening on dry threads.

NOW, some will say not to do this because the lug nuts will loosen up because of the oil however the lugs will actually be tighter when torqued with oil than when torqued dry.

I have been involved in road racing (both off road and on the track) for a very long time. We always use a drop of oil on the threads of the stud to be sure the lugs will tighten properly and the wheels do not fall off.

I have seen too many studs on Model A's with worn or damaged threads because they were never oiled.

My opinion and my experience.

I am sure others will disagree.

Chris W.

Tom Wesenberg · 06-13-2019, 07:02 PM

I would buy a thread restoring tool rather than use a thread file or die, which both remove metal.
The thread restoring tool pushes the deformed metal back into place.

06-13-2019, 09:20 AM	#1
cederholm Senior Member Join Date: Jun 2017 Location: Southport CT Posts: 318	wheel stud - thread size please Hi guys, I have a mildly buggered wheel stud and I need to get a regular nut with the correct thread to make a thread chaser. Can someone please share the correct size and thread for a 1930 wheel stud? Thanks, Carl

06-13-2019, 09:41 AM	#2
Dave in MD Senior Member Join Date: May 2010 Posts: 175	Re: wheel stud - thread size please Carl, The threads are 1/2 inch by 20 threads per inch. I would buy a die of that size to chase the threads. Also, be very careful that you don't damage the threads more as the lug nuts should be torqued. Dave

06-13-2019, 10:08 AM	#4
cederholm Senior Member Join Date: Jun 2017 Location: Southport CT Posts: 318	Re: wheel stud - thread size please I will read that link, thank you! I prefer not to run a die as you can really make a mess if it cuts down the missthread. A simple thread chaser that works well for end damage like this is to take a nut and cut a slit in in. Then gently open the slit and slide the nut over the stud, PAST the damaged part. Then, with the threads of the nut and stud perfectly aligned, compress the nut back to it's original shape and BACK it off over the damaged section. Unless the damage is catastrophic, this should clean the messed up end nicely. Off to read that post now.

06-13-2019, 11:55 AM	#5
nick c Senior Member Join Date: Aug 2010 Posts: 260	Re: wheel stud - thread size please You might consider a thread file, its about 1/2" square and about 8" long, with 4 sides, each end has 4 different thread pitches, that equals 8 different pitches. about $12.00, I have one for US threads and one for metric. carry on

06-13-2019, 01:04 PM	#6
Benson Senior Member Join Date: May 2010 Posts: 2,594	Re: wheel stud - thread size please Sponsored Links (Register now to hide all advertisements) All that it takes is 5 or 6 bad nuts out of the 23 (including the spare!) on the car and after several wheel changes all of the studs can be damaged. By the way this is a very good reason to refrain from using an impact wrench on wheel nuts. With impact wrench you will never know that the threads on the studs are being damaged by the cheap lug nuts. Last edited by Benson; 06-13-2019 at 01:13 PM.

06-13-2019, 01:48 PM	#7
cederholm Senior Member Join Date: Jun 2017 Location: Southport CT Posts: 318	Re: wheel stud - thread size please I wouldn't use a impact wrench on any of my cars lugs - new or old. ...and good reminder about the thread file, I think I have one somewhere.

06-13-2019, 05:44 PM	#9
CWPASADENA Senior Member Join Date: May 2010 Location: PASADENA, CA Posts: 1,882	Re: wheel stud - thread size please Put a drop of oil on the threads before you install the lug nut. This will do wonders for keeping the threads in good condition. Also a little oil will allow you to get a more consistent torque as you are not tightening on dry threads. NOW, some will say not to do this because the lug nuts will loosen up because of the oil however the lugs will actually be tighter when torqued with oil than when torqued dry. I have been involved in road racing (both off road and on the track) for a very long time. We always use a drop of oil on the threads of the stud to be sure the lugs will tighten properly and the wheels do not fall off. I have seen too many studs on Model A's with worn or damaged threads because they were never oiled. My opinion and my experience. I am sure others will disagree. Chris W.

06-13-2019, 07:02 PM	#10
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: wheel stud - thread size please I would buy a thread restoring tool rather than use a thread file or die, which both remove metal. The thread restoring tool pushes the deformed metal back into place.