Insulation Board Washer with 1-5/8" Zinc Wood Fastener, 1000 Pieces per Box: Amazon.com: Industrial & Scientific
200 Pcs Foam Board Fasteners Kit Washers for Insulation Foam Board Panels 100Pcs 1-1/8 Inch Galvanized Steel Washer and 100Pcs Screws for Fixing Fastening and Supporting Hardware Set for Foam Board: Amazon.com: