You can use these RS PRO plain brass washers with your threaded fasteners to form tight connections between objects, meaning they won't come loose. They're nickel-plated to ensure that they resist corrosion and last longer.
These washers are appropriate for electrical applications as their brass material is naturally conductive so won't interrupt or stop the flow of electricity. They're also suitable as spacers and can be stacked with others to compensate for the length of a threaded fastener, ensuring that any long ends don't protrude through an object.
They're compliant with the Restriction of Hazardous Substances (RoHS) certification to give you the assurance that it contains only minimal amounts of any damaging materials like lead. You can use these washers in your plumbing, electrical and mechanical appliances.

• Nickel-plated finish
• For screw/bolt size of M5
• Inside diameter of 5.3 mm
• Brass material
• Outside diameter of 10 mm
• Thickness of 1 mm