2G 7 bolt arp head stud nut

[Kpro22]

Is the 7 bolt arp head stud nut 12 point 12mm, 13mm or 1/2? I searched the fourm and getting mixed answers.

 

[Dsmkauai]

12 point 13mm.

 

[Dsmkauai]

What's a 1/2mm? That doesn't even make sense . 1/2 is standard not mm. And it's a 13mm cuz our cars use mm not standard.

 

[2gmitsueclipse]

The nut for the 7-bolt ARP head stud is an 11mm x 1.25 12pt.

You can buy replacement nuts if needed:

https://www.extremepsi.com/store/product.php?productid=20920&cat=1848&page=1

 

[Dsmkauai]

He's asking what size the socket is like I said 7bolt is 13mm 12p socket.

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[2gmitsueclipse]

If we are in search of a socket, my 1/2 12pt. fits better than a 13mm 12 pt. socket. Either can be used. I have a 7-bolt ARP nut for the stud in front of me. The OP was not clear as to what they were looking for. I saw no mention of the socket to remove/install the nut. While it is true our cars use primarily metric fasteners, ARP produces their product in the USA.

 

[Dsmkauai]

He asked if it was 12p 12mm, 13mm or 1/2. Seemed pretty obvious to me sorry. Either way we both answered for him. Just wanted to keep it clear since most searches are wrong or mixed answers.