Steel Self-Locking Hexagon Nut | MS21044N4 Cheap Sale Low Pice

Military Standard MS21044N4 Steel Nut, Self-Locking, Hexagon

To use this nut, simply place it in the appropriate position and tighten it as needed. When installing, make sure the surface is clean and smooth. During use, avoid over-tightening to prevent damage. For maintenance, keep it dry and clean to extend its lifespan.