What is a Form A Washer?


Form A washers are a standard flat washer used with nuts to provide a flat, stable surface for secure fastening. These versatile washers are the most popular general purpose washer within our range.  Trusted by tradespeople, Form A washers are an essential fixing no professional should be without.


Also known as


 Washers or flat washers.


 Why use Form A Washers?


You use Form A washers to create an even surface for a nut to sit flush against. They help distribute the load evenly - perfect when working with fragile materials or intricate projects.


Form A washers are widely used in engineering, construction and automotive industries, as well as electrical, mechanical and plumbing.


Form A Washers: How they work


Always pair Form A washers with nuts. Combining the two helps prevent loosening and ensures the nut stays firmly in place.


Features and specifications



  • Available in zinc-plated finishes for corrosion resistance and stainless steel for durability.

  • Sizes range from M3 to M30, offering flexibility for different needs.

  • Manufactured to DIN125 standard.


Get your Form A Washers at Fastco


Choose Form A washers in a wide range of sizes, with free delivery on orders over £30.* Shop now on our website, email us at sales@fastco.co.uk, or call 01270 252326 to place your order.


*Restrictions apply; please see our delivery page for details.