Help with rear spring hanger bolts!

[Sax Art]

Help!

I've got a 1991 Suburban that I'm replacing the rear springs. (one broke at the eye) I've got a pair of new springs on order but there's a problem...

I'm having trouble finding the correct bolts to hold the springs on. The dealer says they are a 9/16" bolt. When I asked them if I could order them, the guy says they are $10 A PIECE!!! (I need 6 of them, four for the springs, and two for the shackles....That's $60!!! For @#!$ing bolts!!!!)

Are these a special (shouldered) bolt, or can I just go down to my local hardware store and buy a grade 8 (hardened)9/16" bolt of the proper length?

 

[Emmettology 101]

Go to your local Industrial sales shop. I am running all Grade 8 bolts in my front springs....

<font color=green>MIKE</font color=green> - "Hukd on fawnics,werkd fer me!"
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[Emmettology 101]

I forgot to add, take in the bolts that you are replacing so you get the correct size and length...

I am also using Allen head bolts from the same place in my spring packs!

<font color=green>MIKE</font color=green> - "Hukd on fawnics,werkd fer me!"
<A target="_blank" HREF=http://www.geocities.com/emmettology101>http://www.geocities.com/emmettology101</A>

 

[thatK30guy]

Yep, those are 9/16 inch bolts. Seems like NO hardware store ever stocks on this size of bolt!

They always have from 1/2 and jump to 5/8 bolts. This sucks!!! I am always complaining to our hardware store for not stocking these sizes. They say the 9/16 size is not very popular! OH BULLSHIT!!! 9/16 is very widely used in more things than they think!!!! Still makes me mad!!!

BTW, yeah, don't expect to pay any cheap pennies for 9/16 inch bolts!!! Yes, do get grade 8 bolts for suspension components!!!!!!! Very important to use grade 8 unless you want the bolts to break!!!!

<font color=red>I m so we Todd did.
I m sofa king we Todd did.</font color=red>

 

[Leadfoot]

Also if you have the option go with fine thread bolts and dimpled fine thread locknuts. Less chance of loosening during vibes. Try LMC truck, they have the bolts listed for $1.95 each (P/N 30-0271), washers for $.50 each (P/N 30-0689), and torque nuts for $1.95 each (P/N 30-0835). They might be course thread, but will work just fine with the torque nuts.

Question for everyone else. They sell rivets for the spring hangers in there. I bolted mine on with grade 8 zinc coated hardware, but what tool would you need for those size/strenght rivets?

If you didn't build it yourself, how can you call it yours.......?