Update:

In case you are wondering what grade SS bolts are required to replace OEM bolts, I have learned that the weird markings on some OEM bolts are actually Nissan's OEM bolt grades. However, not all OEM bolts have these markings

Nissan OEM Bolt Grades:

7T ("7") = 8.8
9T ("9") = 9.8
10T ("10") = 10.9
12T ("12") = 12.9

 

CORRECTION:

Throttle body bolts are M6 x 55mm, they are NOT M6 x45mm

 

thanks for the sticky

plan on installing a polished upper plenum and a polished timing cover and want to replace old corroded ones for stainless steel ones.... what are the main bolts and screws i need to replace?

sorry for the noob question, just started researching and trying to find a shortcut to the answer. since I'm trading parts with Vivek id like to send him my old parts asap for him.

 

I winded up buying the 60mm and they fit just fine with my 5/16" spacer.

 

Does anyone know the size of the engine cover Nuts and bolts? I just broke one.

2 Nuts
2 bolts

 

+1 I also would like to know this

 

I forgot I had posted this

I winded up buying the 60mm and they fit just fine with my 5/16" spacer.

 

You can use m6 bolts/nuts to replace those.

 

anybody know the best place to buy all these?
gonna need to make a nice purchase of almost all listed at some point

 

Here's a couple of sources I've used before

http://dmpfasteners.com/
http://www.allensfasteners.com/

You can also buy dress up kits from R1 Autoworks

https://g35driver.com/forums/engine-...ml#post6631278

 

Bolts, 12-Point Head, Stainless 300, Polished, 6mm x 1.00 RH Thread, 25mm UHL

Is this correct for the timing cover?