Replacement nuts for head studs

[JasonS]

I am doing head gaskets on an LDT and thinking about replacing some of the rustier nuts. Anybody know what class of threads the stock nut has? 2B, 3A or ?

 

[doghead]

Try looking at the part numbers from the TM, then google it. Look at the parttarget link for all the details needed to replace.

 

[JasonS]

Thanks. It's a 3B.

 

[gimpyrobb]

I wasn't sure what thread "class" was, so I googled it.

[FONT=Arial, Verdana, Sans Serif]Classes 3A and 3B are best suited where close tolerances, safety and strength are required, and thus are frequently specified for socket cap and socket set screws.

More info here:
http://www.accuratescrew.com/TechTips/?TipNO=5
[/FONT]

 

[Jeepsinker]

You could just bead blast and parkerize and/ or repaint them. That should restore the thread areas as well.

 

[JasonS]

Fastenal has a line of grade 9 nuts with Ecoguard coating that withstands 1000 hours of salt spray. However, the thread class is 2B.

 

[JasonS]

A good overview can be found here: http://www.fastenal.com/content/feds/pdf/Article - Screw Threads Design.pdf

 

[Another Ahab]

Try looking at the part numbers from the TM, then google it. Look at the parttarget link for all the details needed to replace.

How do we get to that link?

 

[doghead]

Here is a direct link, http://www.parttarget.com/.

You can either use that and search the part number you need or, just Google search the part number you need and usually their is a search result that is from "parttarget".

 

[Another Ahab]

Here is a direct link, http://www.parttarget.com/.

You can either use that and search the part number you need or, just Google search the part number you need and usually their is a search result that is from "parttarget".

First I've ever heard of this; THAT is a major resource. Got to bookmark that. Thanks a million, doghead.