Question concerning bolts for frame - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68jimmy · 11-25-2004, 01:40 AM

I'm getting ready to swap out my 3/4 ton suspension for a 1/2 setup and I will have to remove the crossmember rivets. I'm going to use a 7/16 bolt with a flat and lock washer but was wondering if I should go with grade 5 or 8? And should I consider using the nylock nuts instead or use some red threadlocker?

Thanks, and have a safe and happy thanksgiving!

greasemonkey · 11-25-2004, 02:00 AM

Grade 8.

68LSS1 · 11-25-2004, 03:58 AM

Here we go again.

I agree with the grade 8 and going with either the nylon lock nuts or thread locker will be fine. I'm using the nylon locking type but in stainless steel.

**N2TRUX** · 11-25-2004, 10:51 AM

Take a look here-grade 5 vs grade 8 bolts
And here-can Gd 8 bolt replace crossmember rivet?

68jimmy · 11-25-2004, 07:36 PM

Thanks for the replies. It wasn't until I submitted my post that I realized that someone had asked the same question earlier...

thanks again.

68LSS1 · 11-25-2004, 09:02 PM

68jimmy, no problem and don't take it wrong. There's been a few "discussions" about the difference between grade 5 and grade 8 and also the use of stainless. I think for the most part everyone is on the same page.

11-25-2004, 01:40 AM	#1
68jimmy Registered User Join Date: Dec 2003 Location: albuquerque Posts: 431	Question concerning bolts for frame I'm getting ready to swap out my 3/4 ton suspension for a 1/2 setup and I will have to remove the crossmember rivets. I'm going to use a 7/16 bolt with a flat and lock washer but was wondering if I should go with grade 5 or 8? And should I consider using the nylock nuts instead or use some red threadlocker? Thanks, and have a safe and happy thanksgiving! __________________ 78 C10 LWB Super Cheyenne

11-25-2004, 02:00 AM	#2
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	Grade 8. __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

11-25-2004, 03:58 AM	#3
68LSS1 Registered User Join Date: Dec 2002 Location: Tampa Posts: 1,191	Here we go again. I agree with the grade 8 and going with either the nylon lock nuts or thread locker will be fine. I'm using the nylon locking type but in stainless steel. __________________ '68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc

11-25-2004, 10:51 AM	#4
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Take a look here-grade 5 vs grade 8 bolts And here-can Gd 8 bolt replace crossmember rivet? __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

11-25-2004, 07:36 PM	#5
68jimmy Registered User Join Date: Dec 2003 Location: albuquerque Posts: 431	Thanks for the replies. It wasn't until I submitted my post that I realized that someone had asked the same question earlier... thanks again. __________________ 78 C10 LWB Super Cheyenne

11-25-2004, 09:02 PM	#6
68LSS1 Registered User Join Date: Dec 2002 Location: Tampa Posts: 1,191	68jimmy, no problem and don't take it wrong. There's been a few "discussions" about the difference between grade 5 and grade 8 and also the use of stainless. I think for the most part everyone is on the same page. __________________ '68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc



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