Post Mounting Washers

These post mounting washers from StairSupplies are 5/16″ flat washers made from 18-8 stainless steel. They have a small outside diameter and extra thickness, so they sit neatly in tight spots while still standing up to tightening. This is the same washer that ships with stainless Flat Top posts, which makes it a handy spare or replacement. Keep a few in your toolbox for post and bracket installs where you want stainless hardware that won't rust.

Key Features

- Fits 5/16″ fasteners

- 18-8 stainless steel

- Small outside diameter

- Extra thick

- Included with stainless Flat Top posts