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 Graded Bolts - Help
#26945
11/01/02 03:08 AM
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Joined: Dec 2000
Posts: 190
OP
Wheeler
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I had my local welder fab up an additional tow point for the rear of the Runner. Nothing as fancy as Steves shackle hangers, just a piece of angle-iron with a few holes in it to match the existing Toyota one that was back there. My question is about the bolts. I got 2 bolts from the junk yard but I don't know what grade they are. <img src="http://pics.montypics.com/hiluxrunner/2002-10-31/dsc00049.jpg" alt=" - " />
As you can see I am hoping they are grade 9, but that looks more like a b than a 6 or a 9.
Thanx
1996 Hilux Surf KZN185, 3.0L 1KZ-TE Turbo Diesel, 5-Speed BFG AT's 265 70R16, SAW's, 2.5 Cornfed & OME N86C shocks, Sway Bars Removed, Rear Diffbreather. Webshots Pictures
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 Re: Graded Bolts - Help
#26946
11/01/02 05:03 AM
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Joined: Sep 2002
Posts: 1,878
Body Damage is Cool
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This will help with the one on the left metric bolt grading
93 4X4 ext-cab, auto, SR5, 3.4 V6, supercharged, 2.1" pulley, URD fuel mods, Aquamist WI, IPT valve body mod, dual cases, 4" superlift, Alcan springs, 33 BFG MT, ARB locked front & rear, 5.29 US Gears, RB 1" BL, 1.5" BJ spacers, TJM T-17, Warn m8000.
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Re: Graded Bolts - Help
#26947
11/01/02 05:06 AM
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Joined: Jan 2001
Posts: 1,656
Body Damage is Cool
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Those could be metric grades. I think they use numbers and dots. I don't know the rating scale.
Standard grades use hash marks. Add 2 to the number of hash marks to get the grade I think. Beyond a certain number of hash marks (6?) They use numbers too.
Sorry I couldn't be of useful help.
Whoops, nevermind. Mt. Goat posted simultaneously.
<small>[ October 31, 2002, 11:07 PM: Message edited by: larsdennert ]</small>
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Re: Graded Bolts - Help
#26948
11/01/02 07:52 AM
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Joined: Feb 2000
Posts: 4,690
Roll Me Over
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Some bolt manufacturers occasionally also put some sort of symbol or logo on the bolt to say who made it. It mentions that at the bottom of this reference page: http://www.unified-eng.com/scitech/bolt/boltmarks.htmlSo there's a slight possibility that the one on the right was simply manufactured on the planet Mars (for example). <img border="0" title="" alt="[Smile]" src="images/icons/smile.gif" />
Jeff
2000 4Runner SR5, supercharger, rear e-locker, ARB front locker, 285/75R16 MT/R's, custom bumpers & skids
2007 Tacoma double cab 4x4 - stock
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