Do AEBS and ARP use the same head stud nuts?
 

So my vendor is telling me it would be cheaper and faster to find a set of nuts on my own. I have the AEBS nuts and apparently when i first installed and torqued them, i used the wrong socket and rounded the 12points.

I now know that the AEBS nuts are 1/2". I called Don, he said the ARP's he has used were also 1/2".

However, I called ARP and they said the nuts are a 12x1.25mm and use a 14mm socket size.

I'm at a loss here on what to order....and i need to order them and have them here before my head gasket arrives.

Thanks.

Re: Do AEBS and ARP use the same head stud nuts?
 

All the ARP and GE head stud nuts I have here are 1/2 or 13mm 12 points for the socket. What did Race Engineering say? They should have had a set of nuts.
I think they are 11mmX1.25 not 12mm studs.

Re: Do AEBS and ARP use the same head stud nuts?
 

i guess they werent open.

Re: Do AEBS and ARP use the same head stud nuts?
 

i have a set of h22 AEBS nuts here and i use a 1/2" 12point socket. i also have a h22 arp head studs here and it uses a 9/16" or 14mm socket

Re: Do AEBS and ARP use the same head stud nuts?
 

do they have the same thread pitch and ID?

Re: Do AEBS and ARP use the same head stud nuts?
 

these are b-series vtec headstuds set of ARP and AEBS
nut thread is m11x1.25
either nuts will work on either stud
these nuts use a 13mm 12pt socket, im sure a 1/2" 12pt is close to a 13mm thats why some people say 1/2" 12pt socket

http://i77.photobucket.com/albums/j7...s/DSC01839.jpg
ARP on left AEBS on right side view
http://i77.photobucket.com/albums/j7...s/DSC01839.jpg
ARP on left AEBS on right thread view
http://i77.photobucket.com/albums/j7...s/DSC01839.jpg
ARP on bottom AEBS on top, ARP stud
http://i77.photobucket.com/albums/j7...s/DSC01843.jpg
ARP on bottom AEBS on top, showing ARP stud
http://i77.photobucket.com/albums/j7...s/DSC01845.jpg
threads on smoothlY!
the bottom of the nuts are visually virtually the same, both flat faced

the ARP nut appears rounded but that is not done by me, just received this way
this could be the use of the wrong size socket

Re: Do AEBS and ARP use the same head stud nuts?
 

thanks a lot man! that really helps. Finally i can order them.

Re: Do AEBS and ARP use the same head stud nuts?
 

ok im looking and i cannot find an arp nut with 11x1.25 thread size. Ive looked in Jegs and Summit.

http://www.jegs.com/p/ARP/ARP-Replac...52063/10002/-1
http://store.summitracing.com/egnsea...0&NeXID=100740

Re: Do AEBS and ARP use the same head stud nuts?
 

M11 doesn't come in 1.25mm unless it's custom, which is unlikely it's probably M12 x 1.25 or M11 x 1.

Re: Do AEBS and ARP use the same head stud nuts?
 

well arp said it was 12x1.25 so i guess i will just trust them lol

Re: Do AEBS and ARP use the same head stud nuts?
 

Edit: oops, not m12.

Re: Do AEBS and ARP use the same head stud nuts?
 

Guess i need to toss all my mikes and vernier calipers away as they are all fooocked up and measure 11mm. I guess i will also toss my 2 time-sert kits for honda's away also. They are for 11X 1.5 threads. Damn i have to recall all those repairs, and blocks with 11mm ARP head studs. 10 + years down the drain.

Re: Do AEBS and ARP use the same head stud nuts?
 

I think he's right. I got curious and had a set close by...

http://i44.tinypic.com/rwqn9s.jpg

http://i42.tinypic.com/t0i928.jpg

.431 give or take. Thats about 10.95mm These are for a B18C. That is what you guys are talking about right.

Edit: I just read the thread size on the ARP nut itself. It says 7/16-20.

Re: Do AEBS and ARP use the same head stud nuts?
 

well whatever, i ordered the 12x1.25mm from summit. If they are wrong, i will return them for the next size failure.

this is ****ing ridiculous

Re: Do AEBS and ARP use the same head stud nuts?
 

why dont you call ARP and order directly from them?? i might be wrong but the threads from the studs that go into the block are different from the threads the nuts go onto...thats how it is for other cars....

Re: Do AEBS and ARP use the same head stud nuts?
 

Correct, they don't thread in upside down.

To the OP:
Find someone with a thread pitch gauge (or buy one at the hardware store), measure the stud diameter and presto you have the specs for the nut you need.

Re: Do AEBS and ARP use the same head stud nuts?
 

Haha walked right into that one... oops, sorry.

Re: Do AEBS and ARP use the same head stud nuts?
 

i did, i explained the situation to them and they said 12x1.25. Show me anywhere where they make and advertise one of their nuts as 11x1.5 or 11x1.25

Re: Do AEBS and ARP use the same head stud nuts?
 

it would have also helped if aebs had a contact number instead of an email address that doesnt even work.

Re: Do AEBS and ARP use the same head stud nuts?
 

ok well i got the nuts today. I called arp again to reassure myself. I gave them the part number of the package and they said it is the correct nut for their stud - 12mmx1.25

Re: Do AEBS and ARP use the same head stud nuts?
 

Do they fit? It is possible that there is a STD thread on that end as dlaub25 mentioned.

Re: Do AEBS and ARP use the same head stud nuts?
 

i wont find out til next week when the new head goes on

Re: Do AEBS and ARP use the same head stud nuts?
 

I forgot you are doing H22 studs and you did not mention that, they may be 12mm. Bseries are 11 mm, D series 10mm. ARP and AEBS should be the same.