Exhaust stud flange nut size? Anyone?
Seasoned HDF Member
Joined: Jan 2008
Posts: 5,914
Likes: 3,195
From: On one of 10,000
I'm sure I got at least one in parts, just didn't have it on the road.
This is the oldest (2012) thread I've resurrected for help. I'll go with the standard nut, and skip the nylock.
"Seize (Locktite) ya later"!
This is the oldest (2012) thread I've resurrected for help. I'll go with the standard nut, and skip the nylock.
"Seize (Locktite) ya later"!
Seasoned HDF Member
Joined: Oct 2019
Posts: 10,496
Likes: 7,093
From: OH
[QUOTE=inthechateau;9806587]The nut is 1/2", stud is 5/16x20 threads per inch. Standard 5/16 , QUOTE]
Not that it matters 8 yrs later but they are 5/16 x 24 NF (National Fine)
Course thread is 18 tpi. ( NC)
never encountered 5/ 16 x 20
Not that it matters 8 yrs later but they are 5/16 x 24 NF (National Fine)
Course thread is 18 tpi. ( NC)
never encountered 5/ 16 x 20
Ultimate HDF Member
Joined: Jun 2009
Posts: 6,899
Likes: 3,412
From: OH
Too hot for NY-lok nuts. Use a prevailing torque flange nut instead.
Tourer
Joined: Aug 2019
Posts: 288
Likes: 141
From: Dental city
I recently did this fix and found that hardware store nuts didn’t thread on properly. I bought new OEM nuts and they threaded properly. I even wondered if these nuts don’t have a proprietary thread?
Seasoned HDF Member
Joined: Oct 2019
Posts: 10,496
Likes: 7,093
From: OH
Ultimate HDF Member
Joined: Jun 2009
Posts: 6,899
Likes: 3,412
From: OH
https://www.mcmaster.com/90949A227/
Those are what you're looking for. They have distorted threads that make them anti-vibration similar to a ny-lock nut but unaffected by heat.
Those are what you're looking for. They have distorted threads that make them anti-vibration similar to a ny-lock nut but unaffected by heat.
Seasoned HDF Member
Joined: Jan 2008
Posts: 5,914
Likes: 3,195
From: On one of 10,000
https://www.mcmaster.com/90949A227/
Those are what you're looking for. They have distorted threads that make them anti-vibration similar to a ny-lock nut but unaffected by heat.
Those are what you're looking for. They have distorted threads that make them anti-vibration similar to a ny-lock nut but unaffected by heat.
Anyways, I looked in my owners manual, part # 7593 is the nut(s) i need. Someone else was correct, for my bike the nut is a 5/16 x 24 thread. Of course I don't have one; off to the hardware store...
Advanced
Joined: Sep 2009
Posts: 96
Likes: 18
From: South Carolina
the stud is 5/16-18 on the head side and 5/16-24 on the nut side. i use flange carbon nut with anti seize. the reason i do i had a nut seize on the stud once. when i tried to extract nut/stud out of the head the 5/16-18 side(threaded into the head) started galling
and was a booger to get out with out breaking it.
and was a booger to get out with out breaking it.
Seasoned HDF Member
Joined: Oct 2019
Posts: 10,496
Likes: 7,093
From: OH
the stud is 5/16-18 on the head side and 5/16-24 on the nut side. i use flange carbon nut with anti seize. the reason i do i had a nut seize on the stud once. when i tried to extract nut/stud out of the head the 5/16-18 side(threaded into the head) started galling
and was a booger to get out with out breaking it.
and was a booger to get out with out breaking it.
Thank you