10-50 pieces per order DIN 9250 304 Stainless Steel Knurled Elastic Gasket Disc Spring Serrated Lock Washer Material - 304 Stainless Steel Size range - M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16 Key features and benefits - Knurled edge for secure grip and easy seating - Elastic gasket provides a gasketed interface and spacing - Disc spring adds preload maintenance and vibration damping - Serrated lock washer bites into mating surfaces to resist loosening - DIN 9250 standard ensures consistent dimensions and compatibility - Corrosion resistance from 304 stainless steel for demanding environments Installation note - After fully fixed, the groove edge and the material surface in the nut are fully seated Typical applications - Automotive assemblies where vibration can loosen fasteners - Industrial machinery and equipment requiring reliable locking under dynamic loads - Electronics or electrical enclosures where secure fastening and corrosion resistance are important Compatibility - Designed for metric fasteners in sizes M2.5 through M16, covering common small-to-mid size bolt applications