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Old 03-27-2013, 01:04 PM
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DanS DanS is offline
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Join Date: Jul 2010
Location: Idaho Springs
Posts: 473
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Grade 5 3/8" is fine in terms of strength, as you say--overkill.

I don't like grade 8 on bumper mounting bolts, because I like the "softer" grade 5 bolts that will deform in the event of an accident. I'd rather replace some bolts then bend a frame.

Worked like a charm when my little truck got rear ended by a big old Tahoe. Bent the bumper a bit, deformed the bolts, but that's it. The frame survived intact.

Dan
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