[Plunker]

Did this come off 2018 general ride command or my craftsman riding mower

 

[Buelligan666]

I haven't seen a square head bolt anywhere on any of my Polaris vehicles. My bet is the tractor, especially if it's red.

 

[Plunker]

Thought so but rise command is red too

 

[Renob4x4]

My bet is the mower also.
Is it Standard or Metric?

 

[Iangeneral]

Bet it's a pulley/sheave bolt that holds the v belt pulley on to a keyed shaft and looks like it pulled some metal with it when it came out

 

[Plunker]

local lawn mower shop says it is a pully bolt that has stripped out something. old lawnmower so may be time to replace. (2000) model

Not sure it is worth fixing.Glad it was not my ride command.