a bolt goes flying...but where is it from?

was leaving the neighbourhood today, rounding a corner, when I hear a ping ping noise. I stop, look around, and find this bolt. I immediately stop, take a quick look under the truck, don't see anything, don't have any driving issues, no odd noises, no problems whatsoever. I go home, let the truck cool, ask a buddy, he claims it could be a suspension bolt, but I cannot find an empty hole where it would go. I have not had any work done to the truck in a while, the lift was put on a couple years ago. I don't have any earthly idea, my buddy says engine mount, idk. Any suggestions?

 

another view

 

Might have already been in the road. Just keep it in your truck til you find a use for it.

 

Almost looks like a brake caliper bolt.

 

was thinking the same thing, I mean, it is really quite clean, no grease, loctite, etc on it.

 

Too long for that

 

cannot find anything missing in that department.

 

I vote for your truck picking it up on the roadway. have never seen that bolt head on a Tacoma

 

you just ran it over.

 

It's metric and a Japanese thread pitch. Had any trans work done recently?

 

Control arm bolt?

 

no recent work whatsoever. I just cannot pin it on anything. The bolt looks way to clean to me.

 

if its a 10, 12 or 14 MM bolt, then its from your truck, if its anything else, it was probably in the roadway.

 

Ive taken just about every bolt off the under side of these trucks and never seen that bolt. I'm pretty sure it was in the road. The flange head bolts Toyota uses have a wider flange then that bolt.

 

Btw, it's a 17mm bolt.

 

First of all thats a bigger bolt then a 14mm if your talking the head size. And just because it matches a socket size doesn't mean its from his truck. You can get a 9/16th socket on a 14mm and not know it.

 

thanks Jerry!

 

Bolts are not measured by head size.

 

road garbage probably. quite dangerous though on your tire

 

check your truck leaf spring U bolts, body mounting chassis bolts.