RS PRO Nickel Plated Steel Countersunk Countersunk Washer, 5/16in

Introducing the range of RS PRO Countersunk Washers, a high-quality fastener solution for covering nuts or bolts for safety or anti-tampering in a wide range of applications. Each fastener is made from steel and is available in either a plain, or hot dipped galvanised finish, making them much more cost-effective than their stainless-steel counterparts, while still offering a high level of protection against surface rust and oxidisation.

Washers are designed specifically for ease of use and simplicity. They are used for applications where a nut or bolt needs to be tightened to prevent the fastener from loosening or to distribute the load evenly from the nut or bolt head over a larger area. Additionally, they can also serve as a spacer through the fastener before driving it into the surface or object, which in turn creates an additional surface which prevents the fastener from going too deep. Washers are most commonly used in:

• Household applications and DIY


• Electronics and industrial manufacturing


• Construction and building

RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards - they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.