These Low Profile Thin Jam Nuts and Locking Jam Nuts are Used for Several Purposes:
The First is That it Can Fit Into Smaller Area or Clearance Where a Finish Nut Might Not Fit. Secondly, They Can be "Jammed" Against Another Nut in Order to Act as a Lock Method.
Also Known as a Jam Nut, Locking Nut, and Locknut.
