Washers are used to spread the load of a bolt or screw over a larger area or to help prevent loosening under vibration.
General use flat washer
USS pattern is the most common type of flat washer.
SAE pattern is a tighter fit on the bolt and a smaller outside diameter.
A thick flat washer intended for use in structural connections.
Washers with oversized outside diameters.
Split lock washers place tension against a nut after tightening, to help prevent loosening.
A split lock washer designed to fit under the head of a socket cap screw.
A lock washer system that uses wedge locking technology to prevent loosening under severe vibration and dynamic load.
Uses external teeth to help prevent loosening.
Uses internal teeth to help prevent loosening.
A neoprene washer bonded to a metal backing. Used to seal out air/water or dampen noise and vibration.
Decorative washers for use with oval or flat head screws.
Very thick washers with large outside diameters.
Large square washers that are thicker than standard washers.
Intended to be used in a beam flange to provide a parallel surface.
Thick, large diameter, washers with a curved or sculpted appearance.