Qualfast: M20 Rectangula Single Coil Sping Washe - A4/316 St/Steel DIN 127B These metric sized Helical Spring Lock Washers are ideal for securing fasteners that are potentially at risk of coming undone due to vibratory forces. Available in a range of sizes, each washer is manufactured from marine grade A4 stainless steel for optimum resilience. Features and Benefits Manufactured from A4 stainless steel for optimum durability A4 stainless steel construction allows the product to be used in marine grade applications Resistant to corrosion for bolstered overall product longevity Available in a range of metric sizes to suit your requirements Typical Applications Automotive Engineering Manufacturing Standards DIN 127-B MPN: 55450.200.001 EAN: M20 Rectangula Single Coil Sping Washe - A4/316 St/Steel DIN 127B Attributes: Box Quantity: Diameter: 33.6mm For nom. size: M20 Hole Diameter: 20.2mm Leading Standard: DIN 127 B Material: A4 Stainless Surface Treatment: Plain Thickness: 4mm