Because the bolts used by Nissan are Metric and not SAE(commonly know as American). DON'T USE SAE BOLTS! You are cross threading the bolts if you do and this can lead to the bolt stripping or breaking.

Look up Nut/Bolt/Hardware suppliers in the yellow pages near you and get the right bolts.

So I found someone who was selling the metric bolts so i took the safe route...but! as much fun as saying the same thing about standard and metric is...does anyone know about the brake line questions i had mentioned haha?

For the sake of clarification here - that SAE bolt I beleive he is talking about would be a 7/16 fine pitch (which is 20 threads per inch pitch)

The 12mm x 1.75 are the factory bolts (the pitch equivilant of 20.325 threads per inch)

So the the reality is that you are talking about a .2% difference in thread. That would likely NOT be enough to strip the inserts in the body or the bolts. That being said, I would still rather have the correct bolts threaded up into the body so as not to stress anything at all.

If anybody cares, here are the ACTUAL US fine threaded bolts I used on my Xterra body lift instead of Metric bolts


US threaded bolts for the Xterra
From the front:

2 - 7/16" x 6" bolts, nyloc nuts, washers
2 - 7/16" x 6" bolts, nyloc nuts, washers
2 - 3/8" x 6" bolts fine thread(24tpi), washers
2 - 7/16" x 6" bolts, nyloc nuts, washers
2 - 7/16" x 6" bolts fine thread(20tpi), washers

All bolts need to be Grade 8
Use thread loc on all threads

It is entirely up to you if you use US or Metric threads on the body bolts. Make your own decision. This is just an alternative suggestion. Like already said, about .2% difference in thread pitch between the two.

Good source body blocks: www.sportztrailers.com
10 - 3" dia body blocks

Hey so thanks to everyone for all the help..I just did the lift today...just have to re-drill some holes and but the back bumper back on and make some brackets for the front! When I brake there is def some friction noise...I didnt mess with anything that had to do with the brakes. Any ideas? I dont have the resources for welding.. to make brackets for the front...does anyone have any ideas for the front bumper?

So I know I just posted but...i went to get tires today...gonna get some rock crawlers with bf m/t 33" there was quite a bit of rubbing at that was on a 10.5 rim so gonna try a lil narrower rim with same tire...what do you guys think...will i still be able to handle mud/jeep trails/ offroad snow?

Yes...try an 8" rim with as close to stock or 5.5" bs to prevent the rubbing issues...

might sound dumb...but what is bs.."5.5 bs"

bs = backspacing

So...like i said I just lifted my x...but now my turn signals won't work...I put a new fuse in and it opened(blew it)it worked for a few seconds and stopped...it blew threw in a row...so i'm without signals for now...does anyone have any ideas?

This is what I used and where I bought the parts when I put together my 2" BL.
Listed as (quantity) description - where purchased:

• (10) 2" tall x 3" wide body pucks - www.sportztrailers.com
• (6) 7/16" x 6" bolts grade 8- Ace Hardware
• (6) 7/16" Nylock nuts grade 8-Ace Hardware
• (6) 7/16" flat washers grade 8-Ace Hardware
• (2) M10 x 1.25 x 160mm bolts-Local bolt company
• (2) 10mm flat washer-Ace Hardware
• (2) 10mm lock washer-Ace Hardware
• (2) M12 x 1.25 x 170mm bolts-MMNIAC
• (2) 12mm flat washer-Ace Hardware
• (2) 12mm lock washer-Ace Hardware
• (2) M10 x 1.25 x 75mm bolts-for safety loop-Ace Hardware
• (2)2" safety loop extension sleeves (copper pipe, 2" pieces)-Ace Hardware
• (1) large zip tie for powersteering reservoir-Ace Hardware