Shock bolt - What grade?

[nixoid]

I am lengthening the bolts for the dogbones on my shock for a wheel upgrade I am doing.... I'd sure like it to keep going down the track without busting a bolt. Any suggestions on the minimum METRIC grade of bolt I should use? If you are quoting standard number please be specific that it is not a metric number. I'm guessing it would be 10.9 but I am unsure.

Can one of you guys school a squid like me on this?

[Eric Baker]

Yeah I would say 10.9 as they are readily available and super strong. The stronger the better even if it's not needed IMO. Might be able to get away with something lesser like 9.8 or 8.8, but I like to overdo things to avoid problems.

[nixoid]

Yeah I would say 10.9 as they are readily available and super strong. The stronger the better even if it's not needed IMO. Might be able to get away with something lesser like 9.8 or 8.8, but I like to overdo things to avoid problems.

TRhat was the logic I was employing here. It's nice to have someone else come to the same conclusion.

Anyone else feel differently or can put some science bhind our conclusion?

Kev

[Dannyf]

At least 8.8. With the low cost and availability of higher grade I would go even high.

[butcher bergs]

Ace is the place!

[ilikenapalm]

In terms of standard grades..

grade 2= 8.8
grade 5= 10.9
grade 8~ 12.9

so if you can find 12.9, the extra two or three dollars can't hurt.

[nixoid]

In terms of standard grades..

grade 2= 8.8
grade 5= 10.9
grade 8~ 12.9

so if you can find 12.9, the extra two or three dollars can't hurt.

By chance do you know what the marking on a 12.9 bolt looks like?

Kev

[xrocket21]

[scottfromboston]

It's marked in raised numbers. Very simple.

Most shock bolts are fastened with locknuts IIRC.

[nixoid]

It couldn't be much clearer could it? Thanks guys.

Kev