M12 Flat Washer HB62 Brass DIN125 A (1000pcs/Pkg) Washers Countersunk serrated lock washers feature

Countersunk serrated lock washers feature a unique design that provides a secure grip and prevents loosening under vibration

or cap nuts

SAE flat washers are standard flat washers designed to provide a smooth bearing surface and distribute load under bolts

have a domed head that protects screws and bolts from stripping

Keps lock nuts feature an integrated washer with small teeth that grip the surface to prevent loosening

M12 Flat Washer HB62 Brass DIN125 A (1000pcs/Pkg) Washers Countersunk serrated lock washers featureThese 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.