Can anyone identify this nut?

[waynnord]

Dropped the front plastic skid plate on my lbz today, and found this laying there.




The only thing that has been done to the front end since the last time I had the plastic skid plate off is the body shop fixing the front bumper. Any ideas what this goes to?

 

[gmduramax]

Crankshaft nut

 

[waynnord]

My google-foo must be weak, where exactly would this have come off of? I found postings about crankshaft bolts and harmonic balancers, but nothing on crankshaft nuts. Thanks for your help.

 

[WVRigrat05]

It's the nut that holds the balancer on

 

[Evan@InglewoodTrans]

The balancer is held on with a bolt not a nut.

 

[Chevy1925]

That's something aftermarket like for a bulk head fitting, or compression fitting or something. Nothing these truck use

 

[NC-smokinlmm]

Looks like part of a mechanics evacuator system...

 

[S Phinney]

What size socket does it use? Looks like the front axle shaft but.


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[DAVe3283]

Front axle shaft nut doesn't have the overhang like that. As others are saying, it isn't from the truck. The mechanic probably dropped something unrelated while the truck was apart.

 

[waynnord]

A 30mm socket will fit on it.

Seems like the consensus is that it is not part of the truck. I appreciate all of the help.