Self locking washers (Square)

ExcelServ's Square Self-locking Washers are used in conjunction to our weld pins and insulation anchors to fasten insulation in place.

Available in 3 Finishes: Mild Steel, Stainless Steel, and Naked Aluminum


  • Gauges: 12mm & 12 Ga.
  • Finish: Mild Steel, Stainless Steel, or Naked Aluminum
  • Shape: Square

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