Need turbocharger fastener suggestions

[RC K9]

I'm changing my turbo setup. As such, I am now on the hunt for new bolts.

 

3/8"-16

 

That being said, I don't know ish about what kind of material the bolts/stud should be made of. I know that using a grade 5 bolt from Home Depot is not going to cut it. But I see a lot of SS options out there but in my experience, SS galls in heat applications.

 

So educate me on what kind of material should be used, and where I can find bolts/studs made of such material.

[Robochan]

Inconel.

 

https://turbosource.com/products/inconel-turbo-stud-hardware

[Second Gen]

Yup same (Material Mazda used on the turbo's on my FD)..

[iwashmycar]

Stainless isnt strong at all if the Grade 5 isnt going to cut it...basically same strength

[Geeto67]

My local True value and Do it right hardware stores have real grade 8 bolts fairly cheaply. Can't get much more strong than Grade 8 without special ordering and it's really good in shear in tension (where as grade 9 is stonger only in clamping).

 

there is also titanium if the pockets be deep:

 

https://smithprecisionproducts.com/

[iwashmycar]

^^^^that site is awesome. I wish I had an excuse to buy even one thing from it lol .

[Cordell]

Inconel.

 

https://turbosource.com/products/inconel-turbo-stud-hardware

 

This.

 

And only this.

[POS VETT]

In what kind of temperature range that these fasteners are expected to operate?

[RC K9]

In what kind of temperature range that these fasteners are expected to operate?

 

However much heat is generated at the manifold to turbo flange.

[Draco-REX]

Bellvue Washers.

[RC K9]

Has anyone ever used Valerian steel bolts/studs?

[coltboostin]

For $50 for 4 studs, I'll continue to use anything I find in my parts bin.