I need some help identify this part number or name. Thanks in advance.
This piece looks to be an older Wrench piece: Minifigure, Utensil Tool Box Wrench - 6-Rib Handle. Picture shows the part in, what seems to be, in a shade of brown color. Unfortunately this piece doesn't come from LEGO in similar color.
There's a newer piece, with less ribs: Minifigure, Utensil Tool Box Wrench - 3-Rib Handle. This part isn't produced by LEGO in any shades of brown too. At least for the moment of this answer. However it comes in a few other colors compared with an older 6-rib piece.