What size are the bolts for rear coil spring mounts?

[chevy_mike]

Hi guys, I am actually back working some on the Panel. Haven't touched it in almost 2 years. I need to mount my new springs in the rear and have no idea where I put the original hardware so I can replace is all with new Grade 8 stuff. Coil spring rear end, I need the bolt diameter and length of the ones that go through the trailing arms and the upper bolts for the coil retainer.

Thanks a bunch!

[michael bustamante]

5/16" i think but 4 inchrs long for sure. Use thick washers not flimsy ones

[JonnyC10]

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[chevy_mike]

Originally Posted by michael bustamante

5/16" i think but 4 inchrs long for sure. Use thick washers not flimsy ones

Definitely not 5/16" as that's smaller than 3/8" and I have a ton of that size and too small. My guess is either 7/16" or 1/2".

[chevy_mike]

Originally Posted by JonnyC10

I have an extra coil spring hardware kit with the cup/retainers I'll...

Just an FYI, you need to be a Premium member to offer anything for sale on the site.

Thanks for the offer anyways but I just need the bolts, which I can source locally.

[michael bustamante]

Theyre 4 inches long to go thru the trailing arm. I wasnt too sure on the thickness of the bolt. I got all my rear spring hardware from home depot. Update: i just checked. 3/8" x 4""

[JonnyC10]

Originally Posted by chevy_mike

Just an FYI, you need to be a Premium member to offer anything for sale on the site.

Thanks for the offer anyways but I just need the bolts, which I can source locally.

Ya, that's BS. Only forum I have ever been on that charges to list parts and wtb's. Very lame. Hurts the members who need stuff on a budget.

[chevy_mike]

Originally Posted by michael bustamante

Theyre 4 inches long to go thru the trailing arm. I wasnt too sure on the thickness of the bolt. I got all my rear spring hardware from home depot. Update: i just checked. 3/8" x 4""

Thanks for the info. I crawled under mine and took measurement. 4" seems right but I checked the threads on the lower spring retainer and they are 1/2-13 threads. Checked this with my thread chaser and then found all new Grade 8 hardware I had in all my spare bolts boxes. Guess it helps when I tend to buy extra hardware over the years.