recovery bolts?

[bad_religion_au]

what grade bolt would you use to bolt on a recovery hook... grades confuse me. is grade 5 or 8 high tensile? or is high tensile stronger again...

 

[hammerhead]

Man has this topic been beat to death...

Go with grade 8. They're stronger. There's a lot more to it than that but...

 

[fj40charles]

I think he would be looking at something like 11.9 since he is probably using metric.

 

[bad_religion_au]

so is grade 8 a grade of high tensile? this whole rating sh!t goes over my head

 

[Degnol]

They are higher tensil, but I think you give up some shear strength. If you are talking about your weld/bolt recovery points, I think BIG might be the answer. I'd rather have a 3/4" grade 5 than a 5/8" grade 8, if that makes any sense.
JMO
Ed

 

[Degnol]

http://dodgeram.org/tech/specs/bolts/SAE_bolt_strength.html


Lotta good info here.

GL
Ed

 

[teapot]

I have 3/4 grade 5

 

[bad_religion_au]

for my application i think tensile strength is more important than shear... bolt is being "pulled" not side loaded, i.e. nut and washer is stopping the recovery point from coming out, not the shank of hte bolt