Allied Bolt - PART# 22009

• Used as a locking nut on the back of nuts.
  
• Hot dip galvanized to meet ASTM Specification A153.
  
• When concave side of the locknut bears down on top of square nut, the arch is flattened, deflecting the nut threads from their true helix and causing them to firmly grip the bolt threads.

Standard Packaging Information