Check the listing for details. 20sets M8 Finish Countersunk Washer 20mm Dia 5mm Tall Solid Stainless Steel. Condition: New. Listed at 16.55 USD. The countersunk washer is a versatile and durable fastener that can be used in a variety of applications, including automotive, construction, plumbing, electrical applications, and industrial settings. It can be used to fasten metal, wood, plastic, and other materials, and is good for applications where a flush finish is desired.Specifications:Color: SilverMaterial: 304 Stainless SteelInner Diameter: 8mm / 0.31 inchFit for Screw or Bolt Size: M8Outer Diameter: 20mm / 0.79 inchHeight: 5mm / 0.2 inchPacking List: 20 Pack x Countersunk WasherAdvantage:The countersunk washer is a fastener that provides a flush finish and a professional look. Made of 304 stainless steel, it is corrosion resistant and wear resistant, making it good for use in harsh environments.