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Grade 8 or 5

Discussion in 'Builds and Fabricators Forum' started by jonnyspile, Sep 28, 2008.

  1. Sep 28, 2008
    jonnyspile

    jonnyspile Do you smell that???

    Southern Oregon
    Joined:
    Sep 16, 2008
    Messages:
    26
    I'm going to finish my front bumper next week and I'm wondering if grade 5 bolts will work to bolt it on or should I spring for grade 8? Would it really matter? Any input would be appreciated:)
     
  2. Sep 28, 2008
    Old Bill

    Old Bill Aggressively passive....

    Really Southern...
    Joined:
    Nov 12, 2004
    Messages:
    822
  3. Sep 28, 2008
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
    Joined:
    Apr 29, 2007
    Messages:
    3,294
    I went grade 8 :beer:
    Jim S.
     
  4. Sep 28, 2008
    bkap

    bkap Gone, but not long gone.

    Tucson, AZ
    Joined:
    Sep 9, 2006
    Messages:
    784
    I used grade eights for my bumpers and do so for most anything that will have a load or stress on it. I have heard the debate that fives will bend and eights will break but I've bent a whole bunch of eights without too many breaks. This has usually happened when attempting to put too many race cars into the same small space at the same time. :D monkeys
     
  5. Sep 28, 2008
    joel63cj5

    joel63cj5 loose change

    manchester tn
    Joined:
    Sep 1, 2008
    Messages:
    67
    go with 8's
    Posted via Mobile Device
     
  6. Sep 28, 2008
    jeep2003

    jeep2003 Well-Known Member

    Upstate NY
    Joined:
    May 30, 2006
    Messages:
    1,942
    whenever i have to buy bolts for somthing (usually i dont because i have a huge bin of them) I get grade 8 reguardless of use. There a few pennies more but you dont have to worry about them as much and you know you got the best you could
     
  7. Sep 28, 2008
    jonnyspile

    jonnyspile Do you smell that???

    Southern Oregon
    Joined:
    Sep 16, 2008
    Messages:
    26
    Well, the votes are in. I'll go with 8's. Thanks a lot guys!:beer:
     
  8. Sep 29, 2008
    scott milliner

    scott milliner Master Fabricator

    Seattle Wa.
    Joined:
    Dec 17, 2002
    Messages:
    2,362
  9. Sep 29, 2008
    jonnyspile

    jonnyspile Do you smell that???

    Southern Oregon
    Joined:
    Sep 16, 2008
    Messages:
    26
    You're right Scott.....5's should be plenty strong, and I already have them. I guess if I need to buy any, I'll buy 8's but otherwise I'll use the 5's. Thanks for the help!
     
  10. Sep 29, 2008
    NoFlyZone

    NoFlyZone Member

    Ridgeville, SC
    Joined:
    Mar 17, 2006
    Messages:
    578
    8's are blingy to.
     
  11. Sep 29, 2008
    jonnyspile

    jonnyspile Do you smell that???

    Southern Oregon
    Joined:
    Sep 16, 2008
    Messages:
    26
    Blingy?R)
     
  12. Oct 1, 2008
    endless expense 45

    endless expense 45 Oldsmobile RTI Ramp!

    Stony Creek VA.
    Joined:
    Jul 26, 2005
    Messages:
    175
    When in doubt always go grade 8,and they just plain look good to!
     
  13. Oct 1, 2008
    Don X

    Don X The Prodigal Moderator Staff Member 2023 Sponsor

    San Diego,...
    Joined:
    Mar 30, 2007
    Messages:
    3,384
    This is from an e-mail a friend sent me about a year ago when I posed a similar questions. He was in the fastener business for 20+ years and I trust his judgement:

     
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