Square Self-Locking Washers

Square self-locking washers are used in conjunction with weld pins, insulation anchors and lacing anchors to fasten insulation in place.


Sound Acoustic Solutions stocks square self-locking washer that is manufactured of mild steel and 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.

Square Self-Locking Washers specifications

  • Diameter: 1-1/2 inch 0r 2-1/2 inch
  • Material: Mild Steel or stainless Steel
  • Plating: Galvanized
  • Edge Beveled

Weight N/A

Dimensions N/A

Type: Mild Steel, Stainless Steel

Diameter: 1 inch, 1½ inches, 1 inches x 1¼ inches, 2½ inches

Quantity: Bag of 200, Bag of 1000