M8 DIN9021 Plastic large washer for screw M8

The black M8 DIN9021 Plastic large washer for screw M8 is light and sturdy, lighter than its metallic counterpart, and lighter is often better, just ask anyone who is passionate about aeromodelling. Thanks to its dielectric properties, electricians often use these screws, nuts and washers. Not only does it insulate effectively, it prevents corrosion (doesn't rust), comes in handy in humid or aggressive environments (swimming pool, filter and pump rooms, boats) and is resistant to most chemical agents.