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Thread: Source for individual ARP bolts

  1. #31
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    Speaking of bolts I have a question, I just pulled the snow plow off a 89 Suburban and am going to install it on a buddy's 80 Chewy 3/4. Should we use grade 5 or 8 bolts. I can think of possible advantages of both, grade 5 might flex rather than break , but 8 is stronger.

  2. #32
    Registered Member chevynut's Avatar
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    Quote Originally Posted by markm View Post
    Should we use grade 5 or 8 bolts. I can think of possible advantages of both, grade 5 might flex rather than break , but 8 is stronger.
    That's pretty funny.
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  3. #33
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    Quote Originally Posted by chevynut View Post
    That's pretty funny.
    Really, I guess you know more than the Boss Snow Plow Company, all the hardware that came with plow 3 hash marks grade 5.

  4. #34
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    markm,

    You don't want the bolts to stretch, because they will break shortly after that. At lower than grade 8 loads if they are grade 5. Grade 8 bolts are not prone to "cracking" or anything like that.

    Any bolted joint needs to keep the bolts tight or they will break. Ask me how I know, it was pretty dramatic.

    This stuff is basic machine design engineering practice.

    Your snow plow either doesn't need grade 8 bolts, or the designers don't know what they're doing.

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