M6 Countersunk Serrated Lock Washer 304 Stainless Steel DIN6798V (10000pcs/Pkg) Weight-Pound:6.6 or cap nuts

or cap nuts

Fender washers have a larger outer diameter to improve load distribution on thin surfaces

Split lock washers are designed with a split or gap that creates tension when compressed

enabling reuse after maintenance

These general-use flat washers are placed under the head of a bolt or nut to create a smooth bearing surface and distribute the load over a wider area

M6 Countersunk Serrated Lock Washer 304 Stainless Steel DIN6798V (10000pcs/Pkg) Weight-Pound:6.6 or cap nutsCountersunk serrated lock washers feature a unique design that provides a secure grip and prevents loosening under vibration. Their countersunk shape allows for flush mounting, while the serrated edges increase friction, ensuring reliable fastening in automotive and industrial applications.