Round Self-Locking Washers

Round self-locking washers are used in conjunction with weld pins, insulation anchors and lacing anchors to fasten insulation in place. Choose from a variety of metals, sizes and types from our inventory.


Sound Acoustic Solutions stocks round self-locking washer that is manufactured of mild or stainless steel. These insulation washers mount on many types of insulation fasteners for holding insulation material in place. The gauge of the pin, or diameter, should match the fastener it is being affixed. Need fasteners? Browse our expansive offering of perforated based insulation Hangers here.

Self-Locking Washers Round:

  • Diameter: 1 inch or 1½ inch
  • Material: Mild Steel or Stainless Steel
  • Plating: Galvanized
  • Edge: Bevel

Need other choices of insulation washers? Visit our insulation fasteners page for more choices.

Weight N/A
Dimensions N/A

Mild Steel, Stainless Steel


1 inch, 1½ inches, 1-3/16 inches, 1 x 1¼ inches, 2½ inches


Bag of 200, Bag of 1000