Washers definition: A washer is a thin plate (typically disk-shaped, but sometimes square) with a hole (typically in the middle) that is normally used to distri... Washers Product Listing: 21055-6.Hardware, Fasteners, Accessories type:Board Spacers, Standoffs(687922),Miscellaneous(132036),Knobs(78062),Screws, Bolts(74460),Structural, Motion Hardware(20131) .Washers has 121 pieces of spot stock price information, you can click the "RFQ" button to confirm the inventory and price with the Twicea.