What leaf spring hardware to use? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**derotoreut** · 01-15-2014, 12:03 AM

I'm replacing my front and rear leaf springs on my 70 K10 with a 2-1/2" Skyjacker lift and need to replace the spring bolts. I have new U-bolts with the kit, but I'll need new front and rear leaf spring bolts and shackle bolts. I'm wondering what to use for replacement hardware? Is the bolting that LMC sells anything special, or can I just buy grade-8 bolts at a hardware store? What have you guys used and what do you recommend? Thanks.

**derotoreut** · 01-15-2014, 01:21 PM

Come on now, I know many of you have replaced leaf springs. What hardware did you guys use and where did you buy it? Did you buy the bolting from NAPA, LMC, online somewhere, a local spring shop? Any help is appreciated.

oldschool18 · 01-15-2014, 08:33 PM

grade 8 bolts, washers, lock washers and nuts and I used some Loctite.

lowrollin70gmc · 01-15-2014, 10:23 PM

Grade 8 bolt, lock washer, and jamnut from the local hardware store (they sell them by the pound). I ensure that the shoulder of the bolt is long enough to go through the entire bushing sleeve, even if I have to trim the overall length once installed.

KY_GMC · 01-15-2014, 10:29 PM

I found hardware at RockAuto and Husky Spring.

70LonghornCST · 01-15-2014, 11:42 PM

Hi derotoreut! I went ahead and moved this to the Suspension forum for you. Good luck on your project

mrolds88 · 01-15-2014, 11:49 PM

Grade 8 all the way. I would use the all steel locknuts (as opposed to the nylon insert locknuts) Little bit of locktite never hurt anything either!!

**derotoreut** · 01-16-2014, 07:24 PM

I had to cut everything so I don't know sizes. Any ideas?

KY_GMC · 01-16-2014, 10:28 PM

Check out this website. http://www.huskyspring.com/

The listing has a couple of options.

Call them, they are easy to deal with.

**derotoreut** · 01-18-2014, 05:01 PM

It looks like mine are 9/16" by about 4-1/2" long. I heard that some could be 5/8" bolts. I think I'll do like Lowrollin70GMC says and get them from a local hardware store. A lot cheaper then buying them from LMC or spring company. Grade-8 too.

Tx Firefighter · 01-18-2014, 11:32 PM

Quote:

Originally Posted by derotoreut

It looks like mine are 9/16" by about 4-1/2" long. I heard that some could be 5/8" bolts. I think I'll do like Lowrollin70GMC says and get them from a local hardware store. A lot cheaper then buying them from LMC or spring company. Grade-8 too.

Should be 5/16, 3/8, or 7/16 bolts.

9/16 center bolts are not used on common light vehicle springs.

The bolts you buy from a spring shop are fully threaded so they sell you the next longest bolt to what you need and you trim them shorter after installation. I just bought a pair at my local spring shop this week for 3 dollars each.

**derotoreut** · 01-19-2014, 12:00 PM

I am referring to the rear spring eye bolts and shackle bolts. So far this is what I've found:
http://www.sdtrucksprings.com/index....ducts_id=16134
http://www.autoandtrucksprings.com/p...-1442-211.html

I just measured my new leaf spring eye bolt holes and it looks like 9/16"

01-15-2014, 12:03 AM	#1
derotoreut Roto Reuter thats the name... Join Date: Feb 2010 Location: Darien, NY Posts: 1,853	What leaf spring hardware to use? I'm replacing my front and rear leaf springs on my 70 K10 with a 2-1/2" Skyjacker lift and need to replace the spring bolts. I have new U-bolts with the kit, but I'll need new front and rear leaf spring bolts and shackle bolts. I'm wondering what to use for replacement hardware? Is the bolting that LMC sells anything special, or can I just buy grade-8 bolts at a hardware store? What have you guys used and what do you recommend? Thanks. __________________ ~ Dan My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232 My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394 1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt 1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project "Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977

01-15-2014, 01:21 PM	#2
derotoreut Roto Reuter thats the name... Join Date: Feb 2010 Location: Darien, NY Posts: 1,853	Re: What leaf spring hardware to use? Come on now, I know many of you have replaced leaf springs. What hardware did you guys use and where did you buy it? Did you buy the bolting from NAPA, LMC, online somewhere, a local spring shop? Any help is appreciated. __________________ ~ Dan My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232 My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394 1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt 1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project "Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977

01-15-2014, 08:33 PM	#3
oldschool18 Registered User Join Date: Jan 2010 Location: Hollidaysburg, PA Posts: 785	Re: What leaf spring hardware to use? grade 8 bolts, washers, lock washers and nuts and I used some Loctite. __________________ _________________________________ 62 Impala 70 C-10 LWB 71 K-10 SWB 85 C-10 LWB==SOLD 01 2500 HD Members Met......2003Silverado (Dave)

01-15-2014, 10:23 PM	#4
lowrollin70gmc Too many projects Join Date: Mar 2004 Location: Fargo, ND land of the flat hills Posts: 1,147	Re: What leaf spring hardware to use? Grade 8 bolt, lock washer, and jamnut from the local hardware store (they sell them by the pound). I ensure that the shoulder of the bolt is long enough to go through the entire bushing sleeve, even if I have to trim the overall length once installed. __________________ Andrew 84 GMC C1500 SWB 6.2 Diesel/700R4/3.42 "Grandpa's odd duck" 70 GMC C1500 LWB My first truck: shaved, bagged, and more: the lowrollin70gmc 68 K20 Suburban 12V Cummins/NV5600/NP205/D60/11.5AAM 3.73s "Dakota Cadillac" 63 Chevy II Nova Coupe 250 I6/T56/4.56s "Economy car" 53 Willys Wagon 350/NV4500/BW4401/HP D44/9inch “Winter Wagon” 30 Model A 16 Focus ST

01-15-2014, 10:29 PM	#5
KY_GMC Registered User Join Date: Dec 2012 Location: Fort Thomas, KY Posts: 300	Re: What leaf spring hardware to use? I found hardware at RockAuto and Husky Spring. __________________ 1972 GMC 1500 Super Custom, 383 Stoker, TH350 Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592157 Engine Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592233

01-15-2014, 11:42 PM	#6
70LonghornCST Moderator Join Date: Jun 2008 Location: Modesto, CA Posts: 5,775	Re: What leaf spring hardware to use? Hi derotoreut! I went ahead and moved this to the Suspension forum for you. Good luck on your project __________________ 2018 Chevy Crew Cab 2006 Impala SS 1965 Plymouth Sport Fury 1970 Chevy Longhorn Bucket Seats Shoulder Belts Front Tow Hooks Factory Air Factory Speedwarning, Tach & Vaccum Factory Tilt CST Package AM/FM Radio Bumper Guards Richard 70 Longhorn CST Build Adding an AM/FM Decal

01-15-2014, 11:49 PM	#7
mrolds88 Registered User Join Date: Jul 2011 Location: WV Posts: 946	Re: What leaf spring hardware to use? Grade 8 all the way. I would use the all steel locknuts (as opposed to the nylon insert locknuts) Little bit of locktite never hurt anything either!! __________________ 72 GMC C2500 402/Th400 first truck (still have) 77 GMC C3500 CC dually Sold 70 C50 dump truck "Rusty" 87 K10 Suburban Sold 93 K2500 xcab 6.5TD 96 GMC K2500 Suburban 6.5 TD

01-16-2014, 07:24 PM	#8
derotoreut Roto Reuter thats the name... Join Date: Feb 2010 Location: Darien, NY Posts: 1,853	Re: What leaf spring hardware to use? I had to cut everything so I don't know sizes. Any ideas? __________________ ~ Dan My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232 My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394 1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt 1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project "Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977

01-16-2014, 10:28 PM	#9
KY_GMC Registered User Join Date: Dec 2012 Location: Fort Thomas, KY Posts: 300	Re: What leaf spring hardware to use? Check out this website. http://www.huskyspring.com/ The listing has a couple of options. Call them, they are easy to deal with. __________________ 1972 GMC 1500 Super Custom, 383 Stoker, TH350 Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592157 Engine Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592233

01-18-2014, 05:01 PM	#10
derotoreut Roto Reuter thats the name... Join Date: Feb 2010 Location: Darien, NY Posts: 1,853	Re: What leaf spring hardware to use? It looks like mine are 9/16" by about 4-1/2" long. I heard that some could be 5/8" bolts. I think I'll do like Lowrollin70GMC says and get them from a local hardware store. A lot cheaper then buying them from LMC or spring company. Grade-8 too. __________________ ~ Dan My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232 My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394 1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt 1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project "Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977

01-19-2014, 12:00 PM	#12
derotoreut Roto Reuter thats the name... Join Date: Feb 2010 Location: Darien, NY Posts: 1,853	Re: What leaf spring hardware to use? I am referring to the rear spring eye bolts and shackle bolts. So far this is what I've found: http://www.sdtrucksprings.com/index....ducts_id=16134 http://www.autoandtrucksprings.com/p...-1442-211.html I just measured my new leaf spring eye bolt holes and it looks like 9/16" Attached Images __________________ ~ Dan My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232 My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394 1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt 1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project "Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977

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