one stop shop for nut and bolt sizes?

Discussion in 'Other Service and Maintenance' started by twoup, Jul 21, 2009.

  1. twoup

    twoup Active Member

    Morn'n all,

    Is there a diagram/figure that shows a nut/bolt size?

    For example:

    I have a 2005 flstni.
    My service manual, 99482-05, page 4-30, figure 4-24, shows my
    exhaust system. Item 6 is a nut. I can not find anywhere in the
    manual that tells what size nut item 6 is. I'm pretty sure it's a
    5/16x24 but if I didn't know the size is there somewhere I can
    go to get any nut/bolt size I'm looking for from a figure/diagram?


    ride safe
  2. dangerdan

    dangerdan Junior Member

    Your application will determine which "grade" is required.

    I remove the nut, go to a local hardware store and match it to a corresponding bolt, then find the nut that fits that bolt. I prefer to use stainless quality.

    You can use the same process for a bolt.

    If its a specialty item I go to the dealer.
  3. 92FXRS

    92FXRS Active Member

    To expand on what Dangerdan said about "Grades" of bolts, American fractional bolts are:
    Grade 2= soft, household use (no marks on head)
    Grade 5= standard, automotive use (3 slashes on head)
    Grade 8= case hardened, for critical & extreme use (6 slashes on head)

    It's very important not to replace a better with a lesser grade bolt, especially on a bike or cage (could be hazardous to your health & body)

    Metric fasteners also have various "Grades". They normally have number grades stamped on the heads.

    Just wanted to be sure everyone knows that "All Bolts Are NOT The Same".
    Had a brother just about get seriously hurt because he was not aware of this.