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04-13-2007, 05:09 PM
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#1 | |
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Registered User
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Grade 5 Bolts
Are grade 5 bolts strong enough for the leaf springs and lower control arms. I can't find grade 8 bolts that will work anywhere.
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04-13-2007, 05:18 PM
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#2 |
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Registered User
1993 XJ Cherokee
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Have you looked at a AutoZone or Pep Boys? They both have Grade 8 bolts. Hardware stores should too.
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1993 2 door XJ Sport 4.0 5" DPG Coils with 3/4" spacer 4.5" Rough Country Leafs with 1" TNT boomerang lift shackle. TNT Longarms with Bellypan TNT Frame Rail Stiffenerz DPG Gas Tank Skid D30 Aussie locked with Yukon chromollys shafts 4.88s D44 33 spline detroit with Moser chromollys shafts 4.88s Teraflex SYE with Tom Woods custom DS 36x13.50 Iroks on 15x10 Pro Comp Rock Crawlers with Custom beadlocks. |
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04-13-2007, 05:25 PM
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#3 |
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Registered User
2001 XJ Cherokee
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lowes and home depote normally carry them. If not look in the yellow pages under fasteners
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04-13-2007, 05:34 PM
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#4 |
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Registered User
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the size I need is 9/16, the only place that has them is fastenal but they have to special order them. The hardware store has grade 5 in the size i need. Everywhere I gol tells me its an odball size. Wanted to install my lift this weekend and waited till the last minute to get new bolts.
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04-14-2007, 01:10 AM
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#5 |
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Registered User
Join Date: Nov 2005
Location: In the pit, trying to love someone.
Posts: 149
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No way, not worth the risk.
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2009 Jeep Grand Cherokee Laredo 4.7, 4WD, Stock for now 2006 Ford E-150 4.6, RWD, "The Happy Bus" 2003 Jeep Grand Cherokee Laredo 4.0, 4WD, Stock for now 1999 Corvette FRC 383 LS6 stroker, build drivetrain, full suspension, not much left that's stock 1937 Ford 5 Window Coupe 327 SBC, M-22 4 speed, etc.. |
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04-14-2007, 01:30 AM
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#6 |
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Registered User
Join Date: Aug 2004
Location: South Bay Los Angeles, CA
Posts: 2,538
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go to machine shop, look in yellow pages.
Grade 5 bolts are very good, don't know about grade 8 bolts. rule of thumb: grade 5 will bend before breaking grade 8 is very tough, but brittle, and won't bend as much before breaking. but much stronger.
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Newly Painted! Emerald Green '96 XJ 4x4 4.0 HO 5-spd 3" Lift + 31" Tires / D35 TracLok / NP231 Drilled out Stock Airbox / Gauge Cluster Upgrade Magnaflow Muffler / High-flo Cat / MSD Coil |
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04-14-2007, 02:05 AM
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#7 |
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Registered User
1988 XJ Cherokee
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X2 don't chance it. As Bruno said, grade 5 wiil stretch more as opposed to grade 8. On the leaf springs that could spell disaster.
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'89 XJ Laredo 4.0L, AW4, NP242, Dana 30, 35 w/Lock Right, 5.5" lift, 35x12.50x15 Uniroyal m/t '88 XJ 4.0L, AW4, NP231, Dana 30, 35 w/Lock Right, 4.5" lift, 31x9.50 SuperSwamper on salvaged 15x7's '87 XJ Pioneer 4.0L, AW4, NP231, Dana 30, 35 w/ trac-loc, currently stock, 8" lift one piece at a time [QUOTE=mdonohu1]i sweat your nuts. badly.[/QUOTE] |
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04-14-2007, 02:41 AM
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#8 |
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I've returned to the fold
 
1995 XJ Cherokee
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Use Grade 8 with a National Fine (NF) thread. You could use National Coarse (NC) but it is easier to set the torque with fine thread bolts.
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04-14-2007, 10:44 AM
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#9 |
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Registered User
2001 XJ Cherokee
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There is always http://mcmaster.com
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-2001 XJ Limited, 4.0L, NP231 w/ SYE, AW4, 4.5" Lift, 32" tires, 4.56's -1987 XJ Pioneer, 4.0L, NP231 w/ SYE, NV3550, 4.5" lift, 4.10's, D44 rear |
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04-14-2007, 11:20 AM
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#10 | |
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Registered User
1993 XJ Cherokee
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Quote:
Correct me if I'm wrong but isnt 9/16ths the same as 14mm?
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1993 2 door XJ Sport 4.0 5" DPG Coils with 3/4" spacer 4.5" Rough Country Leafs with 1" TNT boomerang lift shackle. TNT Longarms with Bellypan TNT Frame Rail Stiffenerz DPG Gas Tank Skid D30 Aussie locked with Yukon chromollys shafts 4.88s D44 33 spline detroit with Moser chromollys shafts 4.88s Teraflex SYE with Tom Woods custom DS 36x13.50 Iroks on 15x10 Pro Comp Rock Crawlers with Custom beadlocks. |
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04-14-2007, 11:31 AM
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#11 | |
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Web Wheeler
1990 XJ Cherokee
Join Date: Mar 2006
Location: Helsinki, Finland - on the European side of the Atlantic
Posts: 3,455
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Quote:
All leaf spring bolts, as well as LCA and UCA bolts, and track bar bolts are METRIC. 9/16" is very close to that (slightly larger in diameter), but the thread pitch is totally different. So unless you want to ruin the weldnuts inside the unibody frame rail, get metric bolts. 14mm x 110mm and 2mm thread pitch is the correct size for LCA and leaf spring bolts. Class 10.9 is the metric equivalent of grade 8. edit: and get those class 10.9 or grade 8 bolts. I used class 8.8 bolts (around the same as grade 6) on mine for a while, can't say they took the beating too well. I've actually bent a class 8.8, 10mm bolt on my downhill bike which attached the rear shock to the frame... those lower class/ grade bolts are not meant for something like that. Those stronger bolts are there for a reason.
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1998 Grand Cherokee 5.9 LX, 100k miles, 1.75" BB, 32 x 11.50 BFG MT KM2s, custom- fabbed bumpers etc.. http://www.jeepforum.com/forum/f13/daily-driver-5-9-build-thread-bumpers-tube-rockers-etc-1222317/ 1990 XJ Limited (4-door), 4.0 I6, AW4, NP242, ***rolled and totalled @ 165k miles*** ***Under construction*** 1990 XJ (4-door), 4.0 I6, AW4, NP242, PBR 42" tires, Unimog portal axles, 110" WB, full cage + uniframe completely rebuilt, front 3-link + panhard / double triangulated 4-link rear, etc... http://www.jeepforum.com/forum/f11/hybrid-cage-build-exo-cage-internal-973910/ |
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04-14-2007, 01:28 PM
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#12 |
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Registered User
1982 J-Series Truck
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check out www.boltdepot.com
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