Front suspension cross member support bolts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Alan's Classic · 11-11-2008, 11:45 PM

I've got 2 sets (used) of these somewhere, but since my move to the shop I haven't located them yet. I could keep looking, but I was planning on going to the hardware store tommorrow and get some new grade 8's. Does anyone know off hand what size and thread pitch the bolts are? I'm replacing the all of them that attach it to the frame. I know some screw into the crossmember and others have nuts and lock washers.
Thanks

**ChiefRocka** · 11-12-2008, 12:20 AM

I believe they are 1/2" 18 coarse thread...about 1 1/4 - 1 1/2 long.

502tripower · 11-12-2008, 01:29 AM

Quote:

Originally Posted by ChiefRocka

I believe they are 1/2" 18 coarse thread...about 1 1/4 - 1 1/2 long.

1/2" NC would be 1/2-13 & 1/2" NF would be 1/2-20. NC is what was used but either would work fine.

**ChiefRocka** · 11-12-2008, 09:51 AM

Oooops, that's what I meant, I have been dealing with alot of 5/16-18 lately....so I type that 18 by mistake...

Anyway, Rich used all fasteners from Totally stainless.....kinda pricey...personally, I like the look of grade 8.

Alan's Classic · 11-12-2008, 10:24 PM

Thanks guys, I know it was simple question. I was in the process of looking for the bolts in my shop that is driving me crazy. I probably looked right at them. I thought they were fine thread and longer than the actually are. I got to work this am and looked at my xmember thinking that it was fine thread bolts that go thru the side of the rail and into the welded nuts on the xmember.

I know

FreeRideYZ250 · 12-15-2008, 01:43 PM

Quote:

Originally Posted by Alan's Classic

Thanks guys, I know it was simple question. I was in the process of looking for the bolts in my shop that is driving me crazy. I probably looked right at them. I thought they were fine thread and longer than the actually are. I got to work this am and looked at my xmember thinking that it was fine thread bolts that go thru the side of the rail and into the welded nuts on the xmember.

I know

Could you tell me what bolts you ended up getting? I need to get some for mine here shortly, want to replace them with grade 8. Size, thread, length. Much appreciated.

tommys66 · 12-15-2008, 02:46 PM

How long does the finish on grade 8 bolts last? I am inbetween using SS or Grade 8.

Alan's Classic · 12-15-2008, 11:15 PM

Quote:

Originally Posted by FreeRideYZ250

Could you tell me what bolts you ended up getting? I need to get some for mine here shortly, want to replace them with grade 8. Size, thread, length. Much appreciated.

I got 14 each 7/16X1 1/4 grade 8 bolts, 24 flat washers, 14 lock washers and nuts. I don't now the exact thread count, but it is coarse thread.

Alan's Classic · 12-15-2008, 11:19 PM

Quote:

Originally Posted by tommys66

How long does the finish on grade 8 bolts last? I am inbetween using SS or Grade 8.

I don't know how long the finish will last on the grade 8's. Maybe someone else can chime in on the strenght of SS.

protrash64 · 12-15-2008, 11:42 PM

I have used grade 8's and they are still nice, but AZ isnt too rough on them. All the stainless stuff I have used always binds and I avoid it unless doing interior trim items. You can purchase graded stainless; Ive seen it but cant remember where.

11-11-2008, 11:45 PM	#1
Alan's Classic 1 thing at a time is progress. Join Date: Jun 2007 Location: Ball Ground GA Posts: 5,511	Front suspension cross member support bolts I've got 2 sets (used) of these somewhere, but since my move to the shop I haven't located them yet. I could keep looking, but I was planning on going to the hardware store tommorrow and get some new grade 8's. Does anyone know off hand what size and thread pitch the bolts are? I'm replacing the all of them that attach it to the frame. I know some screw into the crossmember and others have nuts and lock washers. Thanks __________________ Alan Philippians 2:14-16 Alan's Classic Facebook page. North Georgia Group Project 1965 Vitamin C-10 1995 GMC Sierra K1500 The "Wrecker"

11-12-2008, 12:20 AM	#2
ChiefRocka Hollister, CA. Join Date: Sep 2006 Location: Hollister, Ca. Posts: 6,150	Re: Front suspension cross member support bolts I believe they are 1/2" 18 coarse thread...about 1 1/4 - 1 1/2 long. __________________ John What the Heck is that ?? CURRENT BUILDS: 62 BurbMaster Other Builds: My '63 C-10,LWB,CC,BBW '06 HD StrAight Axle Swap Father/Son '67 C-20, LQ9,4L80,Bagged,8-Lugger !!Good Friend Richard's Build AMERICAN CUSTOMS & CLASSICS (831) 630-1965 www.ACCHOLLISTER.com ACC on FACEBOOK "Rest in Peace, Mom & Dad ... I will see you again someday!"

11-12-2008, 09:51 AM	#4
ChiefRocka Hollister, CA. Join Date: Sep 2006 Location: Hollister, Ca. Posts: 6,150	Re: Front suspension cross member support bolts Oooops, that's what I meant, I have been dealing with alot of 5/16-18 lately....so I type that 18 by mistake... Anyway, Rich used all fasteners from Totally stainless.....kinda pricey...personally, I like the look of grade 8. __________________ John What the Heck is that ?? CURRENT BUILDS: 62 BurbMaster Other Builds: My '63 C-10,LWB,CC,BBW '06 HD StrAight Axle Swap Father/Son '67 C-20, LQ9,4L80,Bagged,8-Lugger !!Good Friend Richard's Build AMERICAN CUSTOMS & CLASSICS (831) 630-1965 www.ACCHOLLISTER.com ACC on FACEBOOK "Rest in Peace, Mom & Dad ... I will see you again someday!"

11-12-2008, 10:24 PM	#5
Alan's Classic 1 thing at a time is progress. Join Date: Jun 2007 Location: Ball Ground GA Posts: 5,511	Re: Front suspension cross member support bolts Thanks guys, I know it was simple question. I was in the process of looking for the bolts in my shop that is driving me crazy. I probably looked right at them. I thought they were fine thread and longer than the actually are. I got to work this am and looked at my xmember thinking that it was fine thread bolts that go thru the side of the rail and into the welded nuts on the xmember. I know __________________ Alan Philippians 2:14-16 Alan's Classic Facebook page. North Georgia Group Project 1965 Vitamin C-10 1995 GMC Sierra K1500 The "Wrecker"

12-15-2008, 02:46 PM	#7
tommys66 Registered User Join Date: Oct 2008 Location: Southern, MO Posts: 233	Re: Front suspension cross member support bolts How long does the finish on grade 8 bolts last? I am inbetween using SS or Grade 8.

12-15-2008, 11:42 PM	#10
protrash64 Resistance is Futile Join Date: Dec 2006 Location: Mesa,Arizona Posts: 3,520	Re: Front suspension cross member support bolts I have used grade 8's and they are still nice, but AZ isnt too rough on them. All the stainless stuff I have used always binds and I avoid it unless doing interior trim items. You can purchase graded stainless; Ive seen it but cant remember where. __________________ 64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device

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