What is a Penny Washer?


A penny washer is a large, flat metal disc with a hole in the middle. It has a wider diameter compared to standard washers and helps to spread the load of a bolt, screw or nut across your material, making it ideal for protecting thin or fragile surfaces.


Also known as


Repair washers, mudguard washers, fender washers or large flat washers.


Why use Penny Washers?


Standard washers might not give enough support for thin materials like metal or plastic. Smaller washers can sink into the material and cause damage under pressure. Penny washers solve this by spreading the load evenly and protecting the surface.


Penny Washers: How they work


Penny washers are easy to use:



  1. Cover the hole or slot in your material with a penny washer.

  2. Drive in your fastener to secure it.


They’re perfect for a range of projects:



  • Outdoor work: Add stability to fencing with wide mesh.

  • Electrical engineering: Pair them with wood screws.

  • Timber construction: Use penny washers with coach bolts for strong joints.


Features and specifications



  • Diameters range from 20mm to 50mm, with 25mm being our best-seller.

  • Use with M5 to M12 bolts (all 1.5mm thick.)

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

  • Works with regular nuts, bolts and screws.


Buy your Penny Washers at Fastco


Order your penny washers from Fastco, with free delivery on orders over £30.*


Order via 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.