Imperial Washers

Imperial washers are designed to fit imperial fasteners.  The primary function of the imperial washer is to provide a smooth, flat surface between the fastener and the surface, distributing load evenly. These washers are commonly used in North America and other regions that follow the imperial measurement system. They are also used in older machinery and classic car industries where imperial fasteners are utilised.

When considering a washer it's important to consider the inner diameter (ID) (matching the fastener diameter), the outer diameter (OD) (to distribute the load) and the thickness (to accommodate the desired gap or spacing).

Imperial washers come in various types include plain/flat washers, spring washers, mudguard/repair washers, square plate washers, and toothed/shakeproof washers. We stock them in zinc, zinc yellow, stainless, brass and unplated self colour.

Inner diameter (ID) washer sizes options include: 6/32", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8",  7/8", 1", 1 1/8", 1 1/4", 1 3/8", 1 1/2"