I can't find one bolt, nut, and washer :(

"Bandit" (2bandit) 11/08/2013 at 17:36 • Filed to: emma

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16

What it should look like:

Do you think I could just use a regular carriage bolt instead? The bolts secure the metal bumper core to the frame.

For Sweden > Bandit 11/08/2013 at 17:39

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Depends. Is it a mission-critical bolt?

Bandit > For Sweden 11/08/2013 at 17:41

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It holds the metal bumper core to frame.

Ramblin Rover - The Vivisector of Solihull > Bandit 11/08/2013 at 17:42

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Depends what it's through. Typically, splined tapered carriage bolts like that lock a lot more securely because they can effectively press into what they're mounted in instead of just fitting. The inherent weakness of a standard carriage bolt in anything but wood is that it can't be a tight fit, and in consequence its loose fit allows concentration of turning torque at points in ways that a splined press-fit doesn't. In short, it can be way easier to strip the shoulders of.

Edit: seeing your edit, probably would work okay. Probably. Depends on how much vibration you expect. carriage bolts used to be used all the time on bumpers and just got replaced with this type because they're better.

J. Walter Weatherman > Bandit 11/08/2013 at 17:43

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Bumper to frame? You should be fine with using a bolt of your own.

BoxerFanatic, troublesome iconoclast. > Bandit 11/08/2013 at 17:43

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Those are probably hardened, and the splined shoulder may mean something specific.

The conical washers also distribute clamping force away from the bolt hole, which could be meaningful, as well.

A hardened (grade 8 or higher) bolt may do OK for a time, but you may want to look into finding the originals, or ordering correct replacements.

Takuro Spirit > Bandit 11/08/2013 at 17:46

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Should I check my bags for extras?

Nah, fuck that, too cold in the garage.

(I probably don't have any extra... hell, I probably don't even have ONE)

Ramblin Rover - The Vivisector of Solihull > BoxerFanatic, troublesome iconoclast. 11/08/2013 at 17:48

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It's a splined taper, so probably meant to just press into a mostly-round hole. As a bumper bolt (bumpers are not usually crazy hard), he should be okay with a grade 5 carriage bolt for a while.

davedave1111 > Bandit 11/08/2013 at 17:48

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Replacement bolt? What kind of prissy perfectionist are you? If you want to be fancy, use a zip tie. Otherwise a bit of string should hold for a while...

For Sweden > Bandit 11/08/2013 at 17:54

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You probably won't need the real bolt, but get a high-strength bolt. A regular carriage bolt would likely shear in a collision.

lone_liberal > Bandit 11/08/2013 at 18:22

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You'll be fine. Do you know what holds the bumpers of my 71 Camaro on? A couple of regular old carriage bolts, and that's factory. No matter what you use your bumper will function better than mine. Mine will always look better, though. Chrome bumpers forever!!!

Bandit > Ramblin Rover - The Vivisector of Solihull 11/08/2013 at 18:36

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Yay, I have those!

Bandit > Takuro Spirit 11/08/2013 at 18:36

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Those last sentences, I know that feel.

Bandit > lone_liberal 11/08/2013 at 18:37

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I can't dispute the awesomeness of chrome. Those early year 2nd gen Camaros are insanely beautiful.

Takuro Spirit > Bandit 11/08/2013 at 18:40

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I mean, I DO have the front bumper bar.... just not the nose. So, I SHOULD have the bolts, right? RIGHT???

RIGHT?!?!?!?!?!??!?!?!

hold me

Bandit > Takuro Spirit 11/08/2013 at 19:09

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No. If you think you have something odds are you don't have it. Gathering and labeling parts for the body shop sucks by the way.

Takuro Spirit > Bandit 11/08/2013 at 21:54

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That's why I think I'm buying one of those bolt kits. One for the body, and one for the interior.

When I get one.